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Statistics / Probability and Statistics for Engineers and the Scientists 9 / Chapter 1 / Problem 1.4

Probability and Statistics for Engineers and the Scientists | 9th Edition | ISBN: 9780321629111 | Authors: Ronald E. Walpole; Raymond H. Myers; Sharon L. Myers; Keying E. Ye

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Chapter 2, Problem 1.4

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QUESTION:

In a study conducted by the Department of Mechanical Engineering at Virginia Tech, the steel rods supplied by two dierent companies were compared. Ten sample springs were made out of the steel rods supplied by each company, and a measure of exibility was recorded for each. The data are as follows: Company A: 9.3 8.8 6.8 8.7 8.5 6.7 8.0 6.5 9.2 7.0 Company B: 11.0 9.8 9.9 10.2 10.1 9.7 11.0 11.1 10.2 9.6 (a) Calculate the sample mean and median for the data for the two companies. (b) Plot the data for the two companies on the same line and give your impression regarding any apparent dierences between the two companies.

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QUESTION:

In a study conducted by the Department of Mechanical Engineering at Virginia Tech, the steel rods supplied by two dierent companies were compared. Ten sample springs were made out of the steel rods supplied by each company, and a measure of exibility was recorded for each. The data are as follows: Company A: 9.3 8.8 6.8 8.7 8.5 6.7 8.0 6.5 9.2 7.0 Company B: 11.0 9.8 9.9 10.2 10.1 9.7 11.0 11.1 10.2 9.6 (a) Calculate the sample mean and median for the data for the two companies. (b) Plot the data for the two companies on the same line and give your impression regarding any apparent dierences between the two companies.

ANSWER:

Step 1 of 5

- Flexibility of the steel rods: -. Company A: Company B:

We have sample for each company.

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