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Author Question: A tire manufacturer has been producing tires with an average life expectancy of 26,000 miles. Now ... (Read 54 times)

Tb12162018

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on: Mar 25, 2023

A tire manufacturer has been producing tires with an average life expectancy of 26,000 miles.  Now the company is advertising that its new tires' life expectancy has increased.  In order to test the legitimacy of the advertising campaign, an independent testing agency tested a sample of 6 of their tires and has provided the following data.

Life Expectancy

(In Thousands of Miles)

28

27

25

28

29

25


a.Determine the mean and the standard deviation.

b.

At 99% confidence using the critical value approach, test to determine whether or not the tire company is using legitimate advertising. Assume the population is normally distributed.

c.

Repeat the test using the p-value approach.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Tb12162018 on Mar 25, 2023

senorfranco

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Tb12162018

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Reply 2 on: Mar 25, 2023
:D TYSM

momolu

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Reply 3 on: Yesterday
Excellent

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