A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 25,000 miles and a standard deviation of 2400 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table Tires that wear out by (Round to the nearest mile as needed.) miles will be replaced free of charge.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 25,000 miles and a standard deviation of 2400
miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately
10% of the tires?
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table.
Tires that wear out by
(Round to the nearest mile as needed.)
miles will be replaced free of charge.
Transcribed Image Text:A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 25,000 miles and a standard deviation of 2400 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Tires that wear out by (Round to the nearest mile as needed.) miles will be replaced free of charge.
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