8) The average life expectancy of dishwashers produced by a company is 6 years with a standard deviation of 8 months. Assume that the lives of dishwashers are normally distributed. What is the probability that a randomly selected dishwasher will have a life expectancy of at least 7 а. years? b. Dishwashers that fail operating in less than 4 years will be replaced free of charge. What percent of dishwashers are expected to be replaced free of charge? What are the minimum and the maximum life expectancy of the middle 95% of the dishwashers' lives? Give your answer in months. с.

8) The average life expectancy of dishwashers produced by a company is 6 years with a standard deviation of 8 months. Assume that the lives of dishwashers are normally distributed. What is the probability that a randomly selected dishwasher will have a life expectancy of at least 7 а. years? b. Dishwashers that fail operating in less than 4 years will be replaced free of charge. What percent of dishwashers are expected to be replaced free of charge? What are the minimum and the maximum life expectancy of the middle 95% of the dishwashers' lives? Give your answer in months. с.

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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