Practical Management Science
Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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A medical facility does MRI scans for sports injuries. Occasionally a test yields inconclusive result and must be repeated. Using the following 15 sample results for the number of retests in n = 150 observations each, determine the control limits for the proportion of retests. Use three sigma (standard deviations) limits. Is the process in control? Why/why not?

(Round answers to 4 decimal places.)

Task 5: A medical facility does MRI scans for sports injuries. Occasionally a test yields inconclusive result and must
be repeated. Using the following 15 sample results for the number of retests in n = 150 observations each, determine the
control limits for the proportion of retests. Use three sigma (standard deviations) limits. Is the process in control?
Why/why not?
(Round answers to 4 decimal places.)
Sample:
1
2
3
4
7
8
9.
10
11 12
13
14
15
Number of retests:
2
3
3
1
3
3
3
5
4
9
6.
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Transcribed Image Text:Task 5: A medical facility does MRI scans for sports injuries. Occasionally a test yields inconclusive result and must be repeated. Using the following 15 sample results for the number of retests in n = 150 observations each, determine the control limits for the proportion of retests. Use three sigma (standard deviations) limits. Is the process in control? Why/why not? (Round answers to 4 decimal places.) Sample: 1 2 3 4 7 8 9. 10 11 12 13 14 15 Number of retests: 2 3 3 1 3 3 3 5 4 9 6.
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