A barber shop is willing to provide a full refund for customers who are not satisfied with the shaving results obtained. So far, it is known that the probability of a customer requesting a refund is 20%. If on this day 10 customers come, a. How many people on average are satisfied with the results of their haircut? b. What is the probability that there will be more than 7 people requesting a refund?

A barber shop is willing to provide a full refund for customers who are not satisfied with the shaving results obtained. So far, it is known that the probability of a customer requesting a refund is 20%. If on this day 10 customers come, a. How many people on average are satisfied with the results of their haircut? b. What is the probability that there will be more than 7 people requesting a 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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