Answered: An auto magazine wants to review the…

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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Question 5: give the hypotheses.

Transcribed Image Text:An auto magazine wants to review the tread mileage wear of two sports tires. We will compare the average tread wear before replacement between Micheline and Pirelli. As we don't know which brand as a higher average treadwear we will use a two-tailed test. The magazine randomly samples 44 Micheline tires and they had an average treadwear of 20,000 miles before replacement, with a standard deviation of 2,000 miles. There was a random sample of 48 Pirelli tires. The average tread wear of the 48 Pirelli tires was 21,000 miles with a standard deviation of 2,000 miles. Define the first population as the Micheline tires and the second population as the Pirelli tires. Using a 5% significance level determine if the brand competitors do not have an average equal tread wear. Give the hypotheses. Null: There is no difference in the average tread wear of the tires. Alternative: Michelin tires have a an average greater tread wear. Null: There is no difference in the average tread wear of the tires. Alternative: Pirelli tires have a an average greater tread wear. Null: There is no difference in the average tread wear of the tires. Alternative: The average tread wear of the tire brands is not equal.

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