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 takeneach having 5 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted tobe: 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, and11.83 respectively. What are the lower and upper control limits for the X-bar chart?O a.156.55, 170.47O b. 143.55, 165.47O c.144.77, 159.11Od.145.40, 190.72O e.142.92, 160.66Of.None is correct

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

Answered: O b. 143.55, 165.47

Business

Operations Management

O b. 143.55, 165.47

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?
O a.
156.55, 170.47
O b. 143.55, 165.47
O c.
144.77, 159.11
Od.
145.40, 190.72
O e.
142.92, 160.66
Of.
None is correct

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