STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Textbook Question
Chapter 14, Problem 62SE
In a manufacturing process the assembly line speed (feet per minute) was thought to affect the number of defective parts found during the inspection process. To test this theory, managers devised a situation in which the same batch of parts was inspected visually at a variety of line speeds. They collected the following data.
Line Speed | Number of Defective Parts Found |
20 | 21 |
20 | 19 |
40 | 15 |
30 | 16 |
60 | 14 |
40 | 17 |
- a. Develop the estimated regression equation that relates line speed to the number of defective parts found.
- b. At a .05 level of significance, determine whether line speed and number of defective parts found are related.
- c. Did the estimated regression equation provide a good fit to the data?
- d. Develop a 95% confidence interval to predict the
mean number of defective parts for a line speed of 50 feet per minute.
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Chapter 14 Solutions
STATISTICS F/BUSINESS+ECONOMICS-TEXT
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