Answered: Company XYZ know that replacement times…

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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Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 16.7 years and a standard deviation of 1.4 years.

Find the probability that a randomly selected quartz time piece will have a replacement time less than 12.8 years?
P(X < 12.8 years) =

Enter your answer accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

If the company wants to provide a warranty so that only 2% of the quartz time pieces will be replaced before the warranty expires, what is the time length of the warranty?
warranty = years

Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted

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