In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of R chart is 28.17, what is the sample size of each sample? O a. 5 O b. 6 O c. 7 O d. 4 е. None is correct

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
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Chapter2: Introduction To Spreadsheet Modeling
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In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31,
102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and
11.83 respectively. If the upper control limit of R chart is 28.17, what is the sample size of each sample?
O a. 5
O b. 6
O c. 7
O d. 4
O e. None is correct
Transcribed Image Text:In statistical process control, the hourly samples are taken. The sample means are: 156.46, 199.62, 189.31, 102.22, and 112.09 respectively. Also, the ranges of these samples are 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. If the upper control limit of R chart is 28.17, what is the sample size of each sample? O a. 5 O b. 6 O c. 7 O d. 4 O e. None is correct
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