The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.2% 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 8.2% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 11 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?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 8.2% 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 8.2% of his customers buy a magazine is correct, what is the probability that exactly 5 out of the first 11 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?

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