From past records, a department store finds that 70% of the people who enter the store will make a purchase on Black Friday. Suppose that 3 customers are randomly selected, answer the following questions.What is the probability that exactly one out of three customers make a purchase?What is the probability that none of the customers make a purchase?What is the probability that at least one customer makes a purchase?Find the mean and standard deviation for the number of customers who make a purchase. Round your answers to one decimal place.

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Answered: From past records, a department store…

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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From past records, a department store finds that 70% of the people who enter the store will make a purchase on Black Friday. Suppose that 3 customers are randomly selected, answer the following questions.

What is the probability that exactly one out of three customers make a purchase?
What is the probability that none of the customers make a purchase?
What is the probability that at least one customer makes a purchase?
Find the mean and standard deviation for the number of customers who make a purchase. Round your answers to one decimal place.

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