Management at Webster Chemical Company is concerned as to whether caulking tubes are being properly capped. If a significant proportion of the tubes are not being sealed, Webster is placing its customers in a messy situation. Tubes are packaged in large boxes of 135. Several boxes are inspected, and the following numbers of leaking tubes are found: Sample 1 2 3 4 5 6 7 Tubes 7 7 8 5 1 1 Sample 8 9 10 11 12 13 14 Tubes 7 2 4 8 6 9 3 8 Calculate p-chart three-sigma control limits to assess whether the capping process is in statistical control. The UCL, equals and the LCL, equals Sample 15 16 17 18 19 20 Total Tubes 8 3 3 5 3 6 104 D (Enter your responses rounded to three decimal places. If your answer for LCL is negative, enter this value as 0.)
Management at Webster Chemical Company is concerned as to whether caulking tubes are being properly capped. If a significant proportion of the tubes are not being sealed, Webster is placing its customers in a messy situation. Tubes are packaged in large boxes of 135. Several boxes are inspected, and the following numbers of leaking tubes are found: Sample 1 2 3 4 5 6 7 Tubes 7 7 8 5 1 1 Sample 8 9 10 11 12 13 14 Tubes 7 2 4 8 6 9 3 8 Calculate p-chart three-sigma control limits to assess whether the capping process is in statistical control. The UCL, equals and the LCL, equals Sample 15 16 17 18 19 20 Total Tubes 8 3 3 5 3 6 104 D (Enter your responses rounded to three decimal places. If your answer for LCL is negative, enter this value as 0.)
Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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Transcribed Image Text:Management at Webster Chemical Company is concerned as to whether caulking tubes are being properly capped. If a significant proportion of the tubes are not being sealed, Webster is placing its
customers in a messy situation. Tubes are packaged in large boxes of 135. Several boxes are inspected, and the following numbers of leaking tubes are found:
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Sample
1
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3
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4
Tubes
7
7
8
5
1
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Calculate p-chart three-sigma control limits to assess whether the capping process is in statistical control.
The UCL, equals
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Sample
8
8
9
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11
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14
Tubes
7
2
4
8
6
9
MacBook Pro
3
Sample
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20
Total
Tubes
8
3
3
5
and the LCL equals (Enter your responses rounded to three decimal places. If your answer for LCL, is negative, enter this value as 0.)
3
6
104
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O
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