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A tire manufacturer has been producing tires with an average life expectancy of 27,000 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 8 of their tires and has provided the following data. Longevity (In Thousands of Miles) 28.0 26.5 27.2 26.0 28.3 26.4 29.1 25.0 a. b. Determine the mean and the standard deviation. Formulate the correct hypotheses to determine whether or not the tire company is using legitimate adversiting. At the .10 level of significance using the critical value approach, test to determine whether or not the tire company is using legitimate advertising. Assume the population is normally distributed. d. Repeat the test using the p-value approach. C.

A tire manufacturer has been producing tires with an average life expectancy of 27,000 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 8 of their tires and has provided the following data. Longevity (In Thousands of Miles) 28.0 26.5 27.2 26.0 28.3 26.4 29.1 25.0 a. b. Determine the mean and the standard deviation. Formulate the correct hypotheses to determine whether or not the tire company is using legitimate adversiting. At the .10 level of significance using the critical value approach, test to determine whether or not the tire company is using legitimate advertising. Assume the population is normally distributed. d. Repeat the test using the p-value approach. C.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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A tire manufacturer has been producing tires with an average life expectancy of 27,000 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 8 of their tires and has provided the following data. Longevity (In Thousands of Miles) 28.0 26.5 27.2 26.0 28.3 26.4 29.1 25.0 a. b. Determine the mean and the standard deviation. Formulate the correct hypotheses to determine whether or not the tire company is using legitimate adversiting. At the .10 level of significance using the critical value approach, test to determine whether or not the tire company is using legitimate advertising. Assume the population is normally distributed. d. Repeat the test using the p-value approach. C.
Transcribed Image Text:A tire manufacturer has been producing tires with an average life expectancy of 27,000 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 8 of their tires and has provided the following data. Longevity (In Thousands of Miles) 28.0 26.5 27.2 26.0 28.3 26.4 29.1 25.0 a. b. Determine the mean and the standard deviation. Formulate the correct hypotheses to determine whether or not the tire company is using legitimate adversiting. At the .10 level of significance using the critical value approach, test to determine whether or not the tire company is using legitimate advertising. Assume the population is normally distributed. d. Repeat the test using the p-value approach. C.
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