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Name: A certain brand of tire advertises an average of 40,000 miles of tread
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A certain brand of tire advertises an average of 40,000 miles of tread wear before replacement. An auto magazine will do an article on the tire. They sample 48 tires and the average tread wear before replacement was 39,800 miles with a standard devi

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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A certain brand of tire advertises an average of 40,000 miles of tread wear before replacement. An auto magazine will do an article on the tire. They sample 48 tires and the average tread wear before replacement was 39,800 miles with a standard deviation of 2,000 miles. As we do not know if the actual average is higher or lower than 40,000, we will do a two-tailed test at the 5% significance level.

Give the hypotheses.

Give the rejection region.

Give the test statistic.

Give the p - value.

Give the conclusion.

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