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An inventor has developed a new spray coating that is designed to improve the wear of bicycle tires. To test the new coating, the inventor randomly selects one of the two tires on each of 50 bicycles to be coated with the new spray. The bicycle is then driven for 100 miles and the amount of the depth of the tread left on the two bicycle tires is measured (in millimeters). It is desired to determine whether the new spray coating improves the wear of the bicycle tires. The data and summary information is shown below: TETE Bicycle | Coated Tire (C) | Non-Coated Tire (N) 0.785 0.844 1.452 2 1.634 50 1.211 0.954 Coated Non-Coated Difference Mean Std. Dev. Sample Size 1.38 0.85 0.53 0.12 0.11 0.06 50 50 50 Use the summary data to calculate the test statistic to determine if the new spray coating improves the mean wear of the bicycle tires. A) z = 62.46 B) z = 34.25 C) z= 55.26 D) z- 23.02

An inventor has developed a new spray coating that is designed to improve the wear of bicycle tires. To test the new coating, the inventor randomly selects one of the two tires on each of 50 bicycles to be coated with the new spray. The bicycle is then driven for 100 miles and the amount of the depth of the tread left on the two bicycle tires is measured (in millimeters). It is desired to determine whether the new spray coating improves the wear of the bicycle tires. The data and summary information is shown below: TETE Bicycle | Coated Tire (C) | Non-Coated Tire (N) 0.785 0.844 1.452 2 1.634 50 1.211 0.954 Coated Non-Coated Difference Mean Std. Dev. Sample Size 1.38 0.85 0.53 0.12 0.11 0.06 50 50 50 Use the summary data to calculate the test statistic to determine if the new spray coating improves the mean wear of the bicycle tires. A) z = 62.46 B) z = 34.25 C) z= 55.26 D) z- 23.02

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter9: Surfaces And Solids
Section9.1: Prisms, Area And Volume
Problem 13E: Generalize the results found in Exercise 11 and 12 by answering each of the following questions....
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3) An inventor has developed a new spray coating that is designed to improve the wear of bicycle tires. To test the new coating, the inventor randomly selects one of the two tires on each of 50 bicycles to be coated with the new spray. The bicycle is then driven for 100 miles and the amount of the depth of the tread left on the two bicycle tires is measured (in millimeters). It is desired to determine whether the new spray coating improves the wear of the bicycle tires. The data and summary information is shown below: Bicycle | Coated Tire (C) | Non-Coated Tire (N) 0.785 1.452 1.634 0.844 50 1.211 0.954 Coated Non-Coated Difference Мean 1.38 0.85 0.53 Std. Dev. 0.12 0.11 0.06 Sample Size 50 50 50 Use the summary data to calculate the test statistic to determine if the new spray coating improves the mean wear of the bicycle tires. A) z = 62.46 В) — 34.25 C) z = 55.26 D) z = 23.02
Transcribed Image Text:3) An inventor has developed a new spray coating that is designed to improve the wear of bicycle tires. To test the new coating, the inventor randomly selects one of the two tires on each of 50 bicycles to be coated with the new spray. The bicycle is then driven for 100 miles and the amount of the depth of the tread left on the two bicycle tires is measured (in millimeters). It is desired to determine whether the new spray coating improves the wear of the bicycle tires. The data and summary information is shown below: Bicycle | Coated Tire (C) | Non-Coated Tire (N) 0.785 1.452 1.634 0.844 50 1.211 0.954 Coated Non-Coated Difference Мean 1.38 0.85 0.53 Std. Dev. 0.12 0.11 0.06 Sample Size 50 50 50 Use the summary data to calculate the test statistic to determine if the new spray coating improves the mean wear of the bicycle tires. A) z = 62.46 В) — 34.25 C) z = 55.26 D) z = 23.02
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