Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE 1 2 3 4 5 6 7 8 9 10 n 15 15 15 15 15 15 15 15 15 15 p bar Sp UCL LCL NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 2 2 0 2 1 3 2 1 3 2 a. Determine the p, Sp, UCL and LCL for a p-chart of 95 percent confidence (1.96 standard deviations). Note: Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places. b. What comments can you make about the process? O Process is out of statistical control. O Process is in statistical control.
Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table: SAMPLE 1 2 3 4 5 6 7 8 9 10 n 15 15 15 15 15 15 15 15 15 15 p bar Sp UCL LCL NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE 2 2 0 2 1 3 2 1 3 2 a. Determine the p, Sp, UCL and LCL for a p-chart of 95 percent confidence (1.96 standard deviations). Note: Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places. b. What comments can you make about the process? O Process is out of statistical control. O Process is in statistical control.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Transcribed Image Text:Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of
defectives in each are shown in the following table:
SAMPLE
DEBL922446
5
10
p bar
n
15
15
15
15
Sp
UCL
LCL
15
15
15
15
15
15
NUMBER OF
DEFECTIVE ITEMS
IN THE SAMPLE
2
2
0
233NWHNO
1
3
a. Determine the p, Sp, UCL and LCL for a p-chart of 95 percent confidence (1.96 standard deviations).
Note: Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places.
1
b. What comments can you make about the process?
O Process is out of statistical control.
O Process is in statistical control.
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