Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 12.3 years and a standard deviation of 1.2 years. 1. Find the probability that a randomly selected quartz time piece will have a replacement time less than 8.9 years? 2. If the company wants to provide a warranty so that only 3.6% of the quartz time pieces will be replaced before the warranty expires, what is the time length of the warranty?

Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 12.3 years and a standard deviation of 1.2 years. 1. Find the probability that a randomly selected quartz time piece will have a replacement time less than 8.9 years? 2. If the company wants to provide a warranty so that only 3.6% of the quartz time pieces will be replaced before the warranty expires, what is the time length of the warranty?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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