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To monitor the response time of emergency response teams to calls from the local community, 3-sigma control charts for mean and range are constructed. Samples of 4 response times are used. Their means and ranges are calculated. After 10 such samples are collected the average of all the sample mean response times is 11.3 minutes and the average range is 4.1 minutes. The upper and lower control limits are: 14.29 and 9.51 minutes 13.09 and 8.31 minutes O 13.09 and 9.51 minutes 14.29 and 8.31 minutes

To monitor the response time of emergency response teams to calls from the local community, 3-sigma control charts for mean and range are constructed. Samples of 4 response times are used. Their means and ranges are calculated. After 10 such samples are collected the average of all the sample mean response times is 11.3 minutes and the average range is 4.1 minutes. The upper and lower control limits are: 14.29 and 9.51 minutes 13.09 and 8.31 minutes O 13.09 and 9.51 minutes 14.29 and 8.31 minutes

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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To monitor the response time of emergency response teams to calls from the local community, 3-sigma control charts for mean and range are constructed. Samples of 4 response times are used. Their means and ranges are calculated. After 10 such samples are collected the average of all the sample mean response times is 11.3 minutes and the average range is 4.1 minutes. The upper and lower control limits are: 14.29 and 9.51 minutes 13.09 and 8.31 minutes, 13.09 and 9.51 minutes O 14.29 and 8.31 minutes
Transcribed Image Text:To monitor the response time of emergency response teams to calls from the local community, 3-sigma control charts for mean and range are constructed. Samples of 4 response times are used. Their means and ranges are calculated. After 10 such samples are collected the average of all the sample mean response times is 11.3 minutes and the average range is 4.1 minutes. The upper and lower control limits are: 14.29 and 9.51 minutes 13.09 and 8.31 minutes, 13.09 and 9.51 minutes O 14.29 and 8.31 minutes
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