In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hourthere are a total of 5 samples are taken each having 5 observations regarding the thickness of fabric inmeasured 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?a.143.55, 165.47b. 145.40, 190.72С.144.77, 159.11O d. 142.92, 160.66e.None is correctO f.156.55, 170.47

Quality manage charts constitute a wonderful device for engineers to display if a technique is below…

Answered: O b. 145.40, 190.72

Business

Operations Management

O b. 145.40, 190.72

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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Question

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 5 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?
a.
143.55, 165.47
b. 145.40, 190.72
С.
144.77, 159.11
O d. 142.92, 160.66
e.
None is correct
O f.
156.55, 170.47

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