3. A consumer testing agency wants to evaluate the claim made by a manufacturer of discount tires. The manufacturer claims that their tires can be driven for at least 35,000 miles before wearing out. To determine the average number of miles that can be obtained from the manufacturer's tires, the agency randomly selects 60 tires from the manufacturer's warehouse and places the tires on 15 cars driven by test drivers on a 2-mile oval track. The number of miles driven (in thousands of miles) until the tires are determined to be worn out is given in the following table. Assume that the number of miles driven is normally distributed. 1 2 3 4 5 | 6 7 8 | 9 10 11 | 12 13 14| 15 n y Miles 25 27 35 42 28 37 40 31 29 33 | 30 26 31 28 30 15 31.47 5.04 Car S driven Based on the p-value, is there significant evidence that the manufacturer's claim is false. Use a = 0.01.

3. A consumer testing agency wants to evaluate the claim made by a manufacturer of discount tires. The manufacturer claims that their tires can be driven for at least 35,000 miles before wearing out. To determine the average number of miles that can be obtained from the manufacturer's tires, the agency randomly selects 60 tires from the manufacturer's warehouse and places the tires on 15 cars driven by test drivers on a 2-mile oval track. The number of miles driven (in thousands of miles) until the tires are determined to be worn out is given in the following table. Assume that the number of miles driven is normally distributed. 1 2 3 4 5 | 6 7 8 | 9 10 11 | 12 13 14| 15 n y Miles 25 27 35 42 28 37 40 31 29 33 | 30 26 31 28 30 15 31.47 5.04 Car S driven Based on the p-value, is there significant evidence that the manufacturer's claim is false. Use a = 0.01.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

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