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

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

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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