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Name: A consumer protection magazine was interested in comparing tire purcha
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Description: A consumer protection magazine was interested in comparing tire purchased from two different companies that each claimed their tires would last 40,000 miles. A random sample of 10 tires of each brand was obtained and tested under simulated road condi

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 consumer protection magazine was interested in comparing tire purchased from two different companies that each claimed their tires would last 40,000 miles. A random sample of 10 tires of each brand was obtained and tested under simulated road conditions. The number of miles until the tread thickness reached a specific depth was recorded for all tires. The data are given next (in thousands miles)

Brand 1	38.9	39.7	42.3	39.5	39.6	35.6	36	39.2	37.6	39.5
Brand 2	44.6	46.9	48.7	41.5	37.5	33.1	43.4	36.5	32.5	42.0

a. Test the claim that Brand 1 and Brand 2 both have the same variances for tire life span. Use a 0.05 significance level.

b. What is the P-value for your test in part(a)?

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