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1. A particular brand of tires claims that its deluxe tire averages at least 55,000 miles before it needs to be replaced. A survey of owners of that tire design is conducted. From the 45 tires surveyed, the mean lifespan was 46,400 miles with a standard deviation of 6,800 miles. Using a=0.05, is the data highly inconsistent with the claim?

1. A particular brand of tires claims that its deluxe tire averages at least 55,000 miles before it needs to be replaced. A survey of owners of that tire design is conducted. From the 45 tires surveyed, the mean lifespan was 46,400 miles with a standard deviation of 6,800 miles. Using a=0.05, is the data highly inconsistent with the claim?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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a. State the Null and Alternative Hypotheses

b. Choose the appropriate statistical test

c. Determine the Level of Significance and the Critical Value & Solve for the computed value

 

1. A particular brand of tires claims that its deluxe tire averages at least 55,000 miles before it needs to be replaced. A survey of owners of that tire design is conducted. From the 45 tires surveyed, the mean lifespan was 46,400 miles with a standard deviation of 6,800 miles. Using a=0.05, is the data highly inconsistent with the claim?
Transcribed Image Text:1. A particular brand of tires claims that its deluxe tire averages at least 55,000 miles before it needs to be replaced. A survey of owners of that tire design is conducted. From the 45 tires surveyed, the mean lifespan was 46,400 miles with a standard deviation of 6,800 miles. Using a=0.05, is the data highly inconsistent with the claim?
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