The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspectsthat only 7.9% of his customers buy a magazine and he thinks that he might be able to use thedisplay space to sell something more profitable. Before making a final decision, he decides that forone day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment.(b) Assuming his suspicion that 7.9% of his customers buy a magazine is correct, what is theprobability that exactly 4 out of the first 10 customers buy a magazine? Give your answer as adecimal number rounded to two digits.(c) What is the expected number of customers from this sample that wil buy a magazine?

If each trial has only two possible outcomes, that is, success and failure, the probabilities of…

Answered: The owner of a small deli is trying to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What would be the percentage of this question?
According to a recent study in New York, 15% of shoppers are unfairly being charged sales tax in non-taxable items. Mr. Hypothesis feels this proportion is too low. He tests his belief by conducting a survey of 200 random shoppers. Which of the following would be the alternate hypothesis? a. The percent of shoppers unfairly being charged sales tax on non-taxable items < .15 b. The percent of shoppers unfairly being charged sales tax on non-taxable items > .15 c. The percent of shoppers unfairly being charged sales tax on non-taxable items = .15
A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 10.5% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment. ____________________(b) Assuming his suspicion that 10.5% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 10 customers buy a magazine? ___________Give your answer as a decimal number rounded to two digits.(c) What is the expected number of customers from this sample that will buy a magazine?____________
Suppose 25% of workers in a market are willing to work for $55.000 and 75% of workers are willing to work for $63,000. The expected benetit of searching (interviewing) another worker equals S
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 9.6% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment.(b) Assuming his suspicion that 9.6% of his customers buy a magazine is correct, what is the probability that exactly 4 out of the first 13 customers buy a magazine? Give your answer as a decimal number rounded to two digits.(c) What is the expected number of customers from this sample that will buy a magazine?Use the space below to type your answer AND/OR to upload a picture of your work for all the questions in this problem.
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 9.6% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine. (a) Explain why this is a binomial experiment. _____________________________________(b) Assuming his suspicion that 9.6% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 13 customers buy a magazine? Give your answer as a decimal number rounded to two digits. ____________________(c) What is the expected number of customers from this sample that will buy a magazine? ________________________________
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.8% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine.(a) Explain why this is a binomial experiment.(b) Assuming his suspicion that 8.8% of his customers buy a magazine is correct, what is the probability that exactly 4 out of the first 14 customers buy a magazine? Give your answer as a decimal number rounded to two digits.(c) What is the expected number of customers from this sample that will buy a magazine?Use the space below to type your answer to answer your work for all the questions in this problem.
Last year the average math SAT score for students at one school was 775. the Headmaster introduced new methods hoping to improve scores. this year , the math mean SAT score for a sample of students was 1178. If the teaching had no effect, there would be roughly a 3 in 100 chance of seeing such an increase. Does the result have STATISTICAL significance? does the result have PRACTICAL significance? exlain your answer
The owner of a small deli is trying to decide whether to discontinue selling magazines. He that only 10.9% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine. suspects (a) Explain why this is a binomial experiment. (b) Assuming his suspicion that 10.9% of his customers buy a magazine is correct, what is the probability that exactly 2 out of the first 13 customers buy a magazine? Give your answer as a decimal number rounded to two digits. (c) What is the expected number of customers from this sample that will buy a magazine?
The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 9.6% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine. (a) Explain why this is a binomial experiment. (b) Assuming his suspicion that 9.6% of his customers buy a magazine is correct, what is the probability that exactly 3 out of the first 10 customers buy a magazine? Give your answer as a decimal number rounded to two digits. (c) What is the expected number of customers from this sample that will buy a magazine? Use the space below to type your answer AND/OR to upload a picture of your work for all the questions in this problem.

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