Based on the 90% confidence interval (0.23, 0.41) obtained from the study, we can conclude that the claim of 28% of salmon having high levels of mercury falls within the confidence interval, indicating that the claim is plausible or supported by the data.
A confidence interval provides a range of values within which the true population parameter is likely to lie with a certain level of confidence. In this case, the 90% confidence interval (0.23, 0.41) for the proportion of salmon with high levels of mercury suggests that the true proportion in the population is likely to fall within this range.
Since the claimed proportion of 28% falls within the confidence interval, it means that the claim made by the researcher is consistent with the findings of the study. There is no significant evidence to reject the claim or conclude that the true proportion is different from 28%.
Thus, the conclusion is that the claim is plausible or supported by the data.
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If a gain of $12000 is incurred in selling (for cash) office equipment having a book value of $110000, the total amount reported in the cash flows from investing activities section of the statement of cash flows is
The total amount reported in the cash flows from investing activities section of the statement of cash flows would be a gain of $12,000.
The cash flows from investing activities section of the statement of cash flows captures the cash transactions related to the purchase or sale of long-term assets, such as property, plant, and equipment. When an office equipment is sold for cash, the cash received from the sale is recorded as an inflow in the investing activities section.
In this scenario, a gain of $12,000 is incurred from the sale of office equipment with a book value of $110,000. The gain represents the excess of the cash received from the sale over the book value of the equipment. Since the gain is considered a positive cash flow, it would be included as an inflow in the cash flows from investing activities section.
Therefore, the total amount reported in the cash flows from investing activities section would be the gain of $12,000, indicating a positive cash inflow resulting from the sale of the office equipment.
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abri Corporation is considering eliminating a department that has an annual contribution margin of $32,000 and $64,000 in annual fixed costs. Of the fixed costs, $16,000 cannot be avoided. The annual financial advantage (disadvantage) for the company of eliminating this department would be: Multiple Choice ($32,000) $16,000 ($16,000) $32,000
The annual financial advantage (disadvantage) for the company of eliminating the department would be ($16,000).
To calculate the annual financial advantage or disadvantage of eliminating the department, we need to consider the contribution margin and the fixed costs. In this case, the department has an interest contribution margin of $32,000 and $64,000 in annual fixed costs. However, $16,000 of the fixed costs cannot be avoided, meaning they will still be incurred even if the department is eliminated. By eliminating the department, the company will save the remaining fixed costs, which is $64,000 - $16,000 = $48,000. However, since the department has a positive contribution margin of $32,000, the company will lose that contribution if the department is eliminated.
Therefore, the annual financial advantage (disadvantage) of eliminating the department can be calculated as the difference between the savings in fixed costs and the lost contribution margin: $48,000 - $32,000 = ($16,000).
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Riverboat Adventures pays $310,000 plus $15,000 in closing costs to purchase real estate. The real estate consists of land appraised at $35,000, a building appraised at $105,000, and land improvements appraised at $210,000. Compute the cost that should be allocated to the land.
To determine the cost allocated to the land, we need to calculate the proportionate cost of the land in relation to the total appraised value of the real estate. Therefore, the cost allocated to the land is $32,500.
The total cost paid for the real estate is $310,000 plus $15,000 in closing costs, totaling $325,000. To allocate the cost to the land, we need to calculate the proportion of the land's appraised value to the total appraised value of the real estate.
The total appraised value of the real estate is the sum of the appraised values of the land, building, and land improvements, which amounts to $35,000 + $105,000 + $210,000 = $350,000.
To calculate the cost allocated to the land, we divide the appraised value of the land by the total appraised value of the real estate and multiply it by the total cost paid:
Cost allocated to land = (Appraised value of land / Total appraised value) * Total cost
= ($35,000 / $350,000) * $325,000
= 0.1 * $325,000
= $32,500
Therefore, the cost allocated to the land is $32,500. This allocation is based on the relative appraised value of the land compared to the total appraised value of the real estate.
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if an isotope has a cycle (half-life) of 2,000 years, approximately what percent of an original amount will remain after 6,000 years
Answer: 12.5%
Step-by-step explanation:
Formula for Half Life
N = N₀ [tex](\frac{1}{2} ^{\frac{t}{t_{1/2} } } )[/tex]
N = number of isotopes after
N₀ = Initial Isotopes
t = number of years
[tex]t_{1/2}[/tex] = half life years
Given
t=6000
[tex]t_{1/2}[/tex] = 2000
Percent is part out of the whole = remaining/starting amoung
Percent fraction = [tex]\frac{N}{N_{0} }[/tex]
[tex]\frac{N}{N_{0} } = \frac{1}{2} ^{\frac{t}{t_{1/2} } }[/tex]
[tex]\frac{N}{N_{0} } = \frac{1}{2} ^{\frac{6000}{2000 } }[/tex]
[tex]\frac{N}{N_{0} } =[/tex] .125 =12.5%
Question 12 options:
Each topping costs $1
Each topping costs $6
With no toppings a pizza costs $6
With no topping a pizza costs $14
The rate of change represented in the situation is as follows:
With no toppings a pizza costs $6
How to find the rate of change?The rate of change function is defined as the rate at which one quantity is changing with respect to another quantity.
In other words, the rate of change is the change in the dependent variable with respect to the change in the independent variable.
The independent variable is the x value while the dependent variable is the y values.
Therefore, the rate of change represented in the situation is With no toppings a pizza costs $6
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Find the area of each triangle. Round your answers to the nearest tenth.
Answer:
please see answers below
Step-by-step explanation:
Area of triangle = ½ ab sin C, where C is angle between sides a and b
first triangle:
area = 1/2 X 11 X 6 X sin 57
= 27.7 m² to nearest tenth
second triangle:
area = 1/2 X 5.5 X 12 X sin 33
= 18.0 ft² to nearest tenth
In the US, as housing prices change: Group of answer choices Consumption changes in the same direction Consumption changes in the opposite direction There is no relationship with consumption
In the US, housing prices and consumption generally change in the same direction.
Changes in housing prices can have an impact on consumption patterns in the US. Generally, when housing prices increase, consumption also tends to increase, and when housing prices decrease, consumption tends to decrease as well. This relationship can be attributed to several factors. Firstly, when housing prices rise, homeowners experience an increase in their wealth through home equity.
This increase in wealth can lead to higher consumer confidence and a willingness to spend more on goods and services, thereby boosting consumption. Secondly, rising housing prices can also lead to a "wealth effect" for homeowners. This means that homeowners may feel wealthier and more financially secure, leading them to increase their discretionary spending and overall consumption. Conversely, when housing prices decline, homeowners may experience a decrease in their wealth and financial security.
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In 1994, the Walt Disney Corporation ran a special promotion on tickets to Disneyland. Residents of southern California who lived near the amusement park were offered admission at the special price of $22. Other visitors to Disneyland were charged about $30. This practice is an example of:
The practice of offering different ticket prices to residents of southern California and other visitors to Disneyland is an example of price discrimination.
Price discrimination refers to the strategy of charging different prices for the same product or service to different groups of customers based on their willingness to pay or other relevant factors. In this case, the Walt Disney Corporation implemented a special promotion where residents of southern California were offered discounted admission tickets to Disneyland compared to other visitors.
The purpose of this price discrimination strategy is to maximize revenue by segmenting the market and charging different prices to different groups. The corporation likely targeted residents of southern California, who lived near the amusement park, with a lower price to attract more local visitors and encourage repeat visits. By offering a discounted rate to residents, Disney aimed to increase attendance from the local market segment, potentially filling the park during weekdays or off-peak seasons when tourist traffic might be lower.
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Spraying ethanol on your hand makes your hand feel cool. how much heat is absorbed in turning 3.00 grams of ethanol ( c2h5oh) from a liquid to a vapor? the molar heat of vaporization of ethanol is 38.6kj/mol
Approximately 2.51 kJ of heat is absorbed in turning 3.00 grams of ethanol from a liquid to a vapor.
To calculate the amount of heat absorbed in turning 3.00 grams of ethanol (C2H5OH) from a liquid to a vapor, we need to use the molar heat of vaporization of ethanol, which is given as 38.6 kJ/mol.
First, we need to convert the mass of ethanol to moles. The molar mass of ethanol is approximately 46.07 g/mol (12.01 g/mol for carbon, 1.01 g/mol for hydrogen, and 16.00 g/mol for oxygen).
Using the formula: moles = mass / molar mass
moles = 3.00 g / 46.07 g/mol ≈ 0.065 mol
Now, we can calculate the amount of heat absorbed using the molar heat of vaporization:
Heat absorbed = moles × molar heat of vaporization
Heat absorbed = 0.065 mol × 38.6 kJ/mol ≈ 2.51 kJ
Therefore, approximately 2.51 kJ of heat is absorbed in turning 3.00 grams of ethanol from a liquid to a vapor.
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Which statements about liquid volume are true?
Select each correct answer.
Responses
One liter is 1,000 times smaller than one milliliter.
One liter is 1,000 times smaller than one milliliter.
One liter is 100 times smaller than one milliliter.
One liter is 100 times smaller than one milliliter.
One liter is 100 times larger than one milliliter.
One liter is 100 times larger than one milliliter.
One liter is 1,000 times larger than one milliliter.
One liter is 1,000 times larger than one milliliter.
Liters are larger units than milliliters.
Liters are larger units than milliliters.
Milliliters are larger units than liters.
Answer:
The correct statements about liquid volume are:
-One liter is 1,000 times larger than one milliliter. (This is because there are 1,000 milliliters in one liter)
-Liters are larger units than milliliters.
an = -4 • 5^n-1
Fill in the first five terms
In a certain class, 65% of the students have brown hair, 20% have blonde hair and 15% have red hair. in that same class 85% of students have brown eyes, 10% have blue eyes and 5% have green eyes. assuming that these physical traits are independent.
what is the probability a student picked at random has blonde hair and brown eyes? show all your work to receive full credit.
The probability that a student picked at random has both blonde hair and brown eyes is 0.17 or 17%.
To find the probability that a student picked at random has blonde hair and brown eyes, we need to calculate the joint probability of these two events occurring.
Let's denote the events as follows:
A: Having blonde hair
B: Having brown eyes
According to the given information:
P(A) = 20% = 0.20 (probability of having blonde hair)
P(B) = 85% = 0.85 (probability of having brown eyes)
Since the physical traits are assumed to be independent, we can calculate the joint probability as the product of the individual probabilities:
P(A and B) = P(A) * P(B)
P(A and B) = 0.20 * 0.85
P(A and B) = 0.17
Therefore, the probability that a student picked at random has both blonde hair and brown eyes is 0.17 or 17%.
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in how many ways can 345 be written as the sum of an increasing sequence of two or more consecutive positive integers? (a) 1 (b) 3 (c) 5 (d) 6 (e) 7
There is only one way 345 can be written as the sum of an increasing sequence of two or more consecutive positive integers. The correct answer is A) 1.
To find the number of ways 345 can be written as the sum of an increasing sequence of two or more consecutive positive integers, we need to consider the factors of 345.
First, let's find the prime factorization of 345: 345 = 3 * 5 * 23.
Now, let's focus on factor 23. Since the sequence needs to have at least two consecutive positive integers, the smallest possible sequence would be 23 and 24. We can see that any larger sequence would have a sum greater than 345.
Therefore, the only possible way to write 345 as the sum of an increasing sequence of two or more consecutive positive integers is 23 + 24.
Hence, the answer is option (a) 1.
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A solid metal cylinder with a length of 24 cm and radius 2cm is melted down to a form of sphere . what is the radius of the sphere.
Given:
Height of the cylinder (h) = 24 cm
Radius of the cylinder (r) = 2 cm.
If the shape of an object is changed it's Volume doesn't change.
So,
Volume of cylinder = Volume of sphere
Volume of cylinder = πr²h
Volume of sphere = 4/3 πr³
Let the radius of the sphere be r'
⟶ π * (2)² * 24 = 4/3 * π * (r')³
⟶ 4 * 24 * 3/4 = (r')³
⟶ 72 = (r')³
⟶ (4.16)³ = (r')³
⟶ 4.16 = r'
∴ The radius of the sphere is 4.16 cm.
biologist zing yang kuo demonstrated that a cat had been raised from birth with a rat in the same cagewould attack netiehr that specific rat nor other rats this research suggests that
Kuo's research emphasizes the role of learning in shaping an animal's behavior and highlights the importance of early experiences in shaping social behavior. This research has important implications for the fields of biology, animal behavior, and animal welfare.
Biologist Zing Yang Kuo's research demonstrated that a cat raised from birth with a rat in the same cage would not attack that specific rat or other rats. This research suggests that the cat's behavior towards rats is learned and not solely based on instinct. The results of this study have implications for understanding the role of early experiences in shaping an animal's behavior towards other species.
The study highlights the importance of socialization in shaping an animal's behavior. Animals raised in isolation from their own species may exhibit abnormal behaviors and may not develop appropriate social skills. In the case of the cat raised with the rat, the presence of the rat from an early age prevented the cat from perceiving the rat as prey.
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the within-treatment variation reflects multiple choice variation among individuals of different groups. variation between individuals in different groups. variation explained by factors included in the anova model. variation that is not part of the anova model.
Within-treatment variation: Variation among individuals of different groups. Between-treatment variation: Variation between individuals in different groups. Variation explained by factors included in the ANOVA model: Variation attributed to the factors or variables being studied. Variation that is not part of the ANOVA model: Residual or error variation not accounted for by the model.
What is ANOVA?
ANOVA stands for Analysis of Variance. It is a statistical method used to analyze and compare the means of two or more groups or treatments to determine if there are significant differences among them.
The within-treatment variation reflects variation among individuals of different groups.
Within-treatment variation refers to the variability observed within each group or treatment condition in an analysis of variance (ANOVA) model. It measures the differences or variations among individuals within the same group or treatment condition. This variation is typically attributed to random or uncontrolled factors that affect individuals within each group separately.
On the other hand, the variation between individuals in different groups is referred to as the between-treatment variation. It measures the differences or variations observed between the group means or treatment conditions in an ANOVA model. This variation is of interest as it helps determine if there are significant differences among the groups being compared.
The variation explained by factors included in the ANOVA model refers to the portion of the total variation that can be attributed to the specific factors or variables being studied in the analysis. It represents the variation that can be explained or accounted for by the factors included in the model.
Lastly, the variation that is not part of the ANOVA model refers to the residual or error variation. It represents the remaining variation that cannot be explained by the factors or variables included in the ANOVA model. This variation is often attributed to uncontrolled or unmeasured factors, measurement errors, or other sources of variability that are not accounted for in the model.
In summary:
Within-treatment variation: Variation among individuals of different groups.
Between-treatment variation: Variation between individuals in different groups.
Variation explained by factors included in the ANOVA model: Variation attributed to the factors or variables being studied.
Variation that is not part of the ANOVA model: Residual or error variation not accounted for by the model.
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14. What is the missing value to the nearest hundredth? (1 point)
Tan blank =15
A. 0.97
B. 0.27
C. 88.09
D. 86.19
Answer:
D.86.19°
Step-by-step explanation:
Let x represent the missing value.
The given trigonometric equation becomes: tan x=15
We take the inverse tangent of both sides to obtain: tan^-1( tan x )=tan^-1(15)
This implies that; x=tan^-1(15)
We use at least a scientific calculator to evaluate this and obtain: x=86.18592517
To the nearest hundredth, the missing value is x=86'19
A university projects that from this point forward, its tuition will increase by 6% each year. Which of these statements are correct? Sele
To find the university's projected tuition next year, you can add the product of 0. 06 and the tuition of this year to the tuition
To find the university's projected tuition next year, you can multiply the tuition this year by 1. 6.
To find the university's projected tuition in 2 years, you can add the product of 0. 12 and the tuition of this year to the tuition
To find the university's projected tuition in 2 years, you can multiply the tuition this year by 1. 12.
To project the university's tuition percentage increase, you can add 6% of the current tuition to find the next year's tuition and multiply the current tuition by 1.12 to find the tuition in 2 years.
To find the university's projected tuition next year, you need to calculate a 6% increase from the current tuition. This can be done by multiplying the tuition for this year by 0.06 and then adding the result to the current tuition.
To find the university's projected tuition in 2 years, you can apply the same concept. Multiply the tuition for this year by 0.06 twice (since it's a 6% increase per year) to get 0.12, and then add this product to the current tuition.
Therefore, the correct statements are: you can add the product of 0.06 and the tuition of this year to find the next year's tuition, and you can multiply the tuition this year by 1.12 to find the tuition in 2 years.
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g Penne Pharmaceuticals sold 8 million shares of its $1 par common stock to provide funds for research and development. If the issue price is $12 per share, what is the journal entry to record the sale of the shares
The journal entry to record the sale of 8 million shares of $1 par common stock by Penne Pharmaceuticals at an issue price of $12 per share would include the debit to Cash for the total amount received and the credit to Common Stock.
When a company sells its shares, it receives cash in exchange for ownership in the company. In this case, Penne Pharmaceuticals sold 8 million shares at an issue price of $12 per share. The total cash received from the sale would be calculated by multiplying the number of shares (8 million) by the issue price ($12), which equals $96 million.
To record this transaction, the journal entry would be as follows:
Debit:
Cash - $96,000,000
Credit:
Common Stock - $8,000,000 (8 million shares x $1 par value per share)
Additional Paid-in Capital - $88,000,000 ($96 million - $8 million)
The debit to Cash represents the amount of cash received from the sale of shares, and the credits to Common Stock and Additional Paid-in Capital reflect the capitalization of the company with the par value of the shares and the excess amount received over the par value, respectively. This journal entry records the financial impact of the sale of shares on the company's balance sheet.
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What do the specific types and sequence of amino acids determine the structure and function of?proteinsstarchesnucleic acidslipids
Answer:
Protein structure and function are governed by the exact types and order of amino acids. The arrangement of glucose molecules in starch determines both its structure and its purpose. The particular nucleotide sequence governs the structure and functionality of nucleic acids, such as DNA and RNA. Contrarily, the arrangement of fatty acid chains and other components determines lipids rather than the order of amino acids directly.
Bonita Industries produces a product that requires 2.6 pounds of materials per unit. The allowance for waste and spoilage per unit is 0.3 pounds and 0.1 pounds, respectively. The purchase price is $2 per pound, but a 2% discount is usually taken. Freight costs are $0.10 per pound, and receiving and handling costs are $0.07 per pound. The hourly wage rate is $12.00 per hour, but a raise which will average $0.30 will go into effect soon. Payroll taxes are $1.20 per hour, and fringe benefits average $2.40 per hour. Standard production time is 2.0 hour per unit, and the allowance for rest periods and setup is 0.3 hours and 0.1 hours, respectively. The standard direct labor hours per unit is
The standard direct labor hours per unit for Bonita Industries' product can be calculated using the given information on hourly wage rates, raises, payroll taxes, fringe benefits, and standard production time.
To calculate the standard direct labor hours per unit, we need to consider the standard production time and the time taken for rest periods and setup.
Given that the standard production time is 2.0 hours per unit, and the allowance for rest periods and setup is 0.3 hours and 0.1 hours respectively, we can calculate the total standard direct labor hours per unit as follows:
Total standard direct labor hours per unit = Standard production time + Allowance for rest periods + Allowance for setup
Total standard direct labor hours per unit = 2.0 hours + 0.3 hours + 0.1 hours
Total standard direct labor hours per unit = 2.4 hours
Therefore, the standard direct labor hours per unit for Bonita Industries' product is 2.4 hours. This represents the expected time required for direct labor to produce one unit of the product, taking into account production time, rest periods, and setup time.
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the if function applies to one or two conditions, but what if you need to apply multiple conditions?
IF function applies to one or two conditions, but what if you need to apply multiple conditions? Use the IF-Then function O Use the IFor function Use the nesting capabilities of the IF function Use separate IF functions.
Pls give the correct answer
The secant of the angle is 765.
We are given that;
The point (7,−4) on the terminal side of the angle.
Now,
To find the secant of an angle, you need to know the length of the hypotenuse and the length of the side adjacent to the angle in a right triangle. The formula for the secant of an angle is:
secθ=hypotenuse/adjacent
where θ is the angle in standard position1.
To find the secant of the angle, you need to find the length of the hypotenuse and the length of the side adjacent to the angle. You can do this by using the Pythagorean theorem and the properties of a right triangle.
The hypotenuse is the distance from the origin to the point (7,−4). You can use the Pythagorean theorem to find it:
h^2=7^2+(−4)^2
h^2=49+16
h^2=65
The adjacent side is the horizontal distance from the origin to the point (7,−4). You can use the x-coordinate of the point to find it:
a=7
Now, you can substitute these values into the formula for secant and simplify:
secθ=hypotenuse/adjacent
secθ=765
This is already in simplest radical form, so you don’t need to do anything else.
Therefore, by trigonometric identities the answer will be 765.
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The length of a rectangle is 5 yd less than double the width, and the area of the rectangle is 52 yd.
"The length of a rectangle is 5 yards less than double the width, and the area of the rectangle is 52 square yards. Find the dimensions of the rectangle."
Let's assume the width of the rectangle is "x" yards. According to the given information, the length is 5 yards less than double the width. So, the length can be represented as 2x - 5 yards.
The area of a rectangle is given by the formula: Area = length × width.
Substituting the given values, we have:
52 = (2x - 5) × x
Now, let's solve the equation:
52 = 2x² - 5x [Expanding the brackets]
Rearranging the equation:
2x² - 5x - 52 = 0
To solve this quadratic equation, we can factorize it or use the quadratic formula. In this case, let's use the quadratic formula:
x = (-b ± √(b² - 4ac)) / (2a)
In our equation, a = 2, b = -5, and c = -52.
x = (-(-5) ± √((-5)² - 4 * 2 * (-52))) / (2 * 2)
x = (5 ± √(25 + 416)) / 4
x = (5 ± √441) / 4
x = (5 ± 21) / 4
So, we have two possible solutions:
x₁ = (5 + 21) / 4 = 26 / 4 = 6.5
x₂ = (5 - 21) / 4 = -16 / 4 = -4
Since the width cannot be negative, we can discard the second solution.
Therefore, the width of the rectangle is 6.5 yards.
To find the length, we can substitute this value back into the expression we derived earlier:
Length = 2x - 5
Length = 2 * 6.5 - 5
Length = 13 - 5
Length = 8 yards
Hence, the dimensions of the rectangle are:
Width = 6.5 yards
Length = 8 yards.
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The length of a rectangle is 5 yards less than double the width, and the area of the rectangle is 52 square yards. What are the dimensions of the rectangle?
if two lines form congruent adjacent angles, then the lines are
If two lines form congruent adjacent angles, it indicates that the lines are perpendicular to each other.
This is known as the Perpendicular Adjacent Angles Theorem. According to this theorem, if two lines intersect and the adjacent angles formed by the intersection are congruent, then the lines are perpendicular to each other.
Congruent adjacent angles are angles that have the same measure and share a common vertex and a common side. When two lines intersect to form congruent adjacent angles, it implies that the lines are forming a right angle at their point of intersection. Thus, the lines are perpendicular to each other.
In summary, if two lines form congruent adjacent angles, it indicates that the lines are perpendicular.
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After peering into a wishing well, Jocelyn hypothesizes that the distribution of coins is 50% quarters, 20% dimes, 20% nickels, and 10% pennies. To investigate this claim, she reaches in, mixes the coins well, and selects a random sample of 80 coins. She counts how many coins there are of each type. She counts 50 quarters, 12 dimes, 14 nickels, and 4 pennies. She would like to know if her observed distribution provides convincing evidence that the true distribution of coins in the well is different from what she originally thought. What is the value of the chi-square test statistic and P-value?
Find the chi-square table here.
χ2 = 0.63, P-value is less than 0.0005
χ2 = 0.63, P-value is greater than 0.25
χ2 = 5.75, P-value is between 0.10 and 0.15
χ2 = 5.75, P-value is between 0.20 and 0.25
The Chi-square test statistic is 2 = 5.75, P-value is less than 0.0005.
To determine if the observed distribution of coins is significantly different from the hypothesized distribution, Jocelyn can perform a chi-square goodness-of-fit test. The chi-square test statistic measures the discrepancy between the observed and expected frequencies.
First, let's calculate the expected frequencies based on Jocelyn's hypothesized distribution. We multiply the hypothesized proportions by the total sample size (80) to obtain the expected counts:
Expected number of quarters: 80 * 0.5 = 40
Expected number of dimes: 80 * 0.2 = 16
Expected number of nickels: 80 * 0.2 = 16
Expected number of pennies: 80 * 0.1 = 8
Next, we calculate the chi-square test statistic using the formula:
χ2 = Σ [(Observed - Expected)² / Expected]
Let's calculate the chi-square value:
χ2 = [(50 - 40)² / 40] + [(12 - 16)² / 16] + [(14 - 16)² / 16] + [(4 - 8)² / 8]
= [10² / 40] + [(-4)² / 16] + [(-2)² / 16] + [(-4)² / 8]
= 100/40 + 16/16 + 4/16 + 16/8
= 2.5 + 1 + 0.25 + 2
= 5.75
Therefore, the chi-square test statistic is χ2 = 5.75.
To find the corresponding P-value, we need to compare the chi-square statistic to the chi-square distribution with degrees of freedom equal to the number of categories minus 1. In this case, there are 4 - 1 = 3 degrees of freedom.
Looking up the chi-square table with 3 degrees of freedom, we find that a chi-square value of 5.75 corresponds to a P-value of less than 0.0005. Therefore, the correct answer is:
Chi-square χ2 = 5.75, P-value is less than 0.0005.
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Identify coordinate point c.
(0, 2)
(1, 5)
(6, 7)
(7, 3)
Answer:
The coordinate point "c" is (6, 7). if start with ABCD which is rectangle
Step-by-step explanation:
In kite PQRS, mzPQR = 78°, and m
7. m/QRT=
R
8. m/QPS =
Ø
9. mzPSR =
P
'S
According to the values of the kite,
1. m∠QRT will be 51°.
2. m∠QPS will be 110°
3. m ∠ PSR will be 59°
How to determine the anglesTo determine the angles with the figures of the kite given above, note that ∠QPS ≅ ∠QRS
m∠QPS = the sum of m∠QRT and ∠PSR
m∠QPS = 51° + 59°
So, m∠QPS = 110°
Note that angle QRT is gotten by the formula 1/2(180 - m∠PQR)
1/2(180 - 78°)
= 1/2(102)
= 51°
So, with the above calculations, we can arrive at the various angles where angle QRT is 51°, angle QPS is 110°, and angle PSR is 59°.
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The frequency table shows the number of points scored during 30 Bulldogs
basketball games. On a piece of paper, draw a histogram to represent the
data. Then determine which answer choice matches the histogram you drew.
O
OD
Frequency
Sowanbary
10
50-99 10-41 70-79 14-23 90-99
Points
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9
T
Points scored
50-59
60-69
70-79
80-89
90-99
10
Frequency
4
5
9
8
4
50.5 60-69 70-75 80-1H-N
Points
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AW
34-38 12-18 28-72 14-28 20-39
Points
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60.54 40 70-79 80-84 HH
Points
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Answer:
D.
Step-by-step explanation:
In this scenario, we have 5 intervals, indicating that the histogram should consist of 5 bars. The height of each bar in the histogram represents the frequency of data points falling within specific ranges.
To clarify, the first bar should have a height of 4 units, the second bar should have a height of 9 units, the third bar should be 5 units high, the fourth bar should have a height of 8 units, and the fifth bar should have a height measuring 4 units.
Hence, the correct answer is D, as it matches the histogram with the described bar heights.
Company X tried selling widgets at various prices to see how much profit they would
make. The following table shows the widget selling price, x, and the total profit
earned at that price, y. Write a quadratic regression equation for this set of data,
rounding all coefficients to the nearest hundredth. Using this equation, find the
profit, to the nearest dollar, for a selling price of 19.5 dollars.
Price (x) Profit (y)
15.75 22602
18.25 29017
23.00 38820
33.00 42470
37.75 35708
A quadratic regression equation for this set of data is y(x) = -69.27x² + 4921.02x - 37722.14.
For a selling price of 19.5 dollars, the profit is 31897.83.
What is a quadratic function?In Mathematics, the standard form of a quadratic function is represented by the following equation;
ax² + bx + c = 0
Next, we would create a system of equation by using the data points provided above;
a(15.75)² + b(15.75) + c = 22602
248.06a + 15.75b + c = 22602 .....equation 1.
a(18.25)² + b(18.25) + c = 29017
333.06a + 18.25b + c = 29017 .....equation 2.
a(23.00)² + b(23.00) + c = 38820
529.00a + 23.00b + c = 38820 .....equation 3.
By solving the system of equations simultaneously, the values of a, b, and c are as follows;
a = -69.27
b = 4921.02
c = -37722.14
Therefore, the required quadratic function in standard form is given by;
ax² + bx + c = 0
y(x) = -69.27x² + 4921.02x - 37722.14
For a selling price of 19.5 dollars, the profit can be calculated as follows:
y(19.5) = -69.27(19.5)² + 4921.02(19.5) - 37722.14
y(19.5) = 31897.83.
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