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Jack bought 2 medium sodas and 2 hot dogs. He paid with $20. What was his change? WORTH 25 POINTS PLZ NEED ANSWER NOW
General
2 months ago
A human resource manager wants to see if there is a difference in the proportion of minority applicants who get the job and the proportion of Caucasian applicants who get the job. After reviewing the records, she came up with the following confidence interval for the difference between the proportions: [ − 0.23 , − 0.15 ] . The sample mean difference was -0.19. The error bound is defined by: Right Endpoint - Sample Mean Difference Find the error bound.
General
2 months ago
Pls solve. Showing your work is suggested.
General
2 months ago
A manufacturer produces a large number of toasters. From past experience, the manufacturer knows that approximately 1% are defective. In a quality control procedure, we randomly select 50 toasters for testing. We want to determine the probability that no more than one of these toasters is defective.
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2 months ago
Graph the function f(x)= 5x^5 + 4x^4 - 4x^3 - 7x^2 +6 by making a table of values.
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2 months ago
Andre wants to make an open-top box by cutting out corners of a 22 inch by 28 inch piece of poster board and then folding up the sides. The volume in cubic inches of the open-top box is a function of the side length in inches of the square cutouts.Write an expression for .What is the volume of the box when ?What is a reasonable domain for in this context?
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2 months ago
. The following chart shows the number of concert tickets sold and the profit earned. Find the slope of the line through these pointsTickets Sold Profit (dollars)50 100100 250150 400200 550
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2 months ago
What is 3 1/3 divided by 2/3
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2 months ago
Rita must have all the orders placed right now done in 7 days or fewer. How will this change your inequality and your graph?Write an inequality to represent each situation. Then, graph the solution.
General
2 months ago
Find the slope of the curve y = x^2 - 5x - 4 at the point P(3, -10) by finding the limit of the secant slopes through point P.
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2 months ago
1) Explain why arithmetic sequences best modelled with linear functions?2)Explain why geometric sequences best modelled with exponential function?
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2 months ago
.A water tank fills through two pipes. Water flows inthrough one pipe at a rate of 25,000 gallons per hourand in through the other pipe at a rate of 45,000gallons per hour. Water leaves the system at a rate of60,000 gallons per hour.There are 3 of these tanks, and each tank holds1 million gallons. Each tank is half full. Water isentering and leaving a tank at the maximumamounts. Determine the number of hours, x, it willtake to fill all 3 tanks one at a time.
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2 months ago
1)A person borrows money from a friend and they decide to use a simple interest formula. where I is the interest in dollars, P is the principle (original money loaned) in dollars, R is the interest rate, and T is the time in years. If the person borrowed $3000 for 3 years at a rate of 2%, how much interest will they owe for the loan?A)$30B)$180C)$300D)$360
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2 months ago
1) How much should you deposit at the end of each month into an investment account that pays 9% compounded monthly to have $3 million when you retire in 40 years? 2) How much of the $3 million comes from interest?
General
2 months ago
Suppose a three-seat city council election. For each seat, one progressive and one conservative is running, and voters must choose between one of the two candidates. Further suppose there are more conservative than progressive voters, such that the probability of a conservative candidate winning is 0.6. (a) What is the probability that the conservative party wins all three seats? (b) What is the probability that the conservative party wins exactly two seats?
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2 months ago
In a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?" The margin of error in the poll was 4%, and the estimate was made with 90% confidence.How many people were surveyed?How do you step by step solve this with a TI-84 Calculator? What function can you use?
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2 months ago
Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.2 inches1. State the appropriate null and alternative hypotheses to assess whether women are taller today.A) H0: u = 64.2 in. versus H1: u not equal to 64.2 in.B) H0: u = 63.7 in. versus H1: u not equal to 63.7 in.C) H0: u = 63.7 in. versus H1: u > 63.7 in.D) H0: u = 63.7 in. versus H1: u < 63.7 in.E) H0: u = 64.2 in. versus H1: u > 64.2 in.F) H0: u = 64.2 in. versus H1: u < 64.2 in.2. Suppose the P-value for this test is 0.18. Explain what this value represents.A) There is a 0.18 probability of obtaining a sample mean height of 63.7 inches or taller from a population whose mean height is 64.2 inches.B) There is a 0.18 probability of obtaining a sample mean height of exactly 64.2 inches from a population whose mean height is 63.7 inches.C) There is a 0.18 probability of obtaining a sample mean height of 64.2 inches or taller from a population whose mean height is 63.7 inches.D) There is a 0.18 probability of obtaining a sample mean height of 64.2 inches or shorter from a population whose mean height is 63.7 inches.3. Write a conclusion for this hypothesis test assuming an a = 0.05 level of significance.A) Do not reject the null hypothesis. There is not sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today.B) Reject the null hypothesis. There is sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today.C) Reject the null hypothesis. There is not sufficient evidence to conclude that the mean height of women 20 years of age or older is greater today.D) Do not reject the null hypothesis. There is sufficient evenidence that the mean height of women 20 years of age or older is greater today.
General
2 months ago
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car.A. When designing a study to determine this population proportion, what is the minimum number of drivers you would need to survey to be 95% confident that the population proportion is estimated to within 0.01? (Round your answer up to the nearest whole number.)B. If it was later determined that it was important to be more than 95% confident and a new survey was commissioned, how would that affect the minimum number you would need to survey?
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2 months ago
You want to build a wheelchair ramp leading up to your house. Your front door is 2 feet higher than the driveway and you would like the grade of the ramp to be 7%. (a) What is the angle, θ, that the ramp forms with the driveway? (Round your answer to three decimal places.) s ° (b) How long does the driveway have to be to build this ramp? (Round your answer to two decimal places.) s ft (c) How long will the ramp be? (Round your answer to two decimal places.)
General
2 months ago
a high school track teams long jump record is 21 feet and 2 1/4 inches. this year Tims best long jump is 20 feet and 9 1/2 inches. if long jumps are measured to the nearest quarter inch, how much farther must Tim jump to break the record?
General
2 months ago
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