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(c) Chacha Corporation makes electric face brush. The life of electric face brush manufactured by this corporation has a normal distribution with a mean of 70 months and a standard deviation of 8 months. The company is to determine the warranty period for this brush. Any brush that needs a major repair during this warranty period will be replaced free by company. i What should the warranty period be if the company does not want to replace more than 1% of the brushes? ii What should the warranty period be if the company does not want to replace more that 5% of the brushes?

(c) Chacha Corporation makes electric face brush. The life of electric face brush manufactured by this corporation has a normal distribution with a mean of 70 months and a standard deviation of 8 months. The company is to determine the warranty period for this brush. Any brush that needs a major repair during this warranty period will be replaced free by company. i What should the warranty period be if the company does not want to replace more than 1% of the brushes? ii What should the warranty period be if the company does not want to replace more that 5% of the brushes?

MATLAB: An Introduction with Applications
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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(c) Chacha Corporation makes electric face brush. The life of electric face brush manufactured by this corporation has a normal distribution with a mean of 70 months and a standard deviation of 8 months. The company is to determine the warranty period for this brush. Any brush that needs a major repair during this warranty period will be replaced free by company. i What should the warranty period be if the company does not want to replace more than 1% of the brushes? ii What should the warranty period be if the company does not want to replace more that 5% of the brushes?
Transcribed Image Text:(c) Chacha Corporation makes electric face brush. The life of electric face brush manufactured by this corporation has a normal distribution with a mean of 70 months and a standard deviation of 8 months. The company is to determine the warranty period for this brush. Any brush that needs a major repair during this warranty period will be replaced free by company. i What should the warranty period be if the company does not want to replace more than 1% of the brushes? ii What should the warranty period be if the company does not want to replace more that 5% of the brushes?
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