In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are taken each having 6 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted to be: 156.46, 199.62, 189.31, 102.22, and112.09 respectively. In the same sample, the corresponding ranges are: 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. What are the lower and upper control limits for the X-bar chart? O a None is correct O b. 146.01, 157.87 Oc 142.92, 160.66 O d. 143.55, 165.47 Oe. 156.55, 170.47 Of. 144.78, 159.11
In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are taken each having 6 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted to be: 156.46, 199.62, 189.31, 102.22, and112.09 respectively. In the same sample, the corresponding ranges are: 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. What are the lower and upper control limits for the X-bar chart? O a None is correct O b. 146.01, 157.87 Oc 142.92, 160.66 O d. 143.55, 165.47 Oe. 156.55, 170.47 Of. 144.78, 159.11
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:In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5
samples are taken each having 6 observations regarding the thickness of fabric in measured in millimeters. In a particular hour,
the sample means (X-bar) are noted to be: 156.46, 199.62, 189.31, 102.22, and112.09 respectively. In the same sample, the
corresponding ranges are: 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. What are the lower and upper control limits for
the X-bar chart?
O a Noneis correct
O b. 146.01, 157.87
Oc 142.92, 160.66
O d. 143.55, 165.47
O e. 156.55, 170.47
Of
144.78, 159.11
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