Answered: A tire company claims that its top…

Name: A tire company claims that its top selling brand averages at least 50,
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A tire company claims that its top selling brand averages at least 50,000 miles before it needs to be replaced. Past studies have shown the standard deviation is 8,000 miles. A survey of 28 owners of the tire design is conducted and the mean lifespan

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 tire company claims that its top selling brand averages at least 50,000 miles before it needs to be replaced. Past studies have shown the standard deviation is 8,000 miles. A survey of 28 owners of the tire design is conducted and the mean lifespan is 46,500 with a standard deviation of 9,800 miles. Using a 95% level of confidence, are the sample findings consistent with the company’s claim?

1. What is the null and alternate hypothesis?

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