A mechanic sells a brand of automobile tire that has a life expectancy that is normally​ distributed, with a mean life of  24,000 miles and a standard deviation of 2800 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? Tires that wear out by________ miles will be replaced free of charge. (Round to the nearest mile as​ needed).

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A: Let FUND B is sample 1.  S1 = 18.9 S2 = 15.0 n1 = n2 = 60

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A: Given Mean=36000 Standard deviations=2600 Z=-1.282

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Q: A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed,…

A: mean = 36000standard deviation = 2100

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.