A clothing store has a return policy that allows a customer to exchange items or cash refund. 25% of customers choose cash refund. If there are 16 customers come for return, find (a) the probability that there are more than 2 customers choose cash refund. (b) the mean and standard deviation of the number of customers choose cash refund.

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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QUESTION 7
A clothing store has a return policy that allows a customer to exchange items or cash refund.
25% of customers choose cash refund. If there are 16 customers come for return, find
(a) the probability that there are more than 2 customers choose cash refund.
(b) the mean and standard deviation of the number of customers choose cash refund.
Transcribed Image Text:QUESTION 7 A clothing store has a return policy that allows a customer to exchange items or cash refund. 25% of customers choose cash refund. If there are 16 customers come for return, find (a) the probability that there are more than 2 customers choose cash refund. (b) the mean and standard deviation of the number of customers choose cash refund.
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