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12. An R chart is used to monitor the variation in the weights of packages of chocolate chip cookies produced by a large national producer of baked goods. An analyst has collected a baseline of 200 observations to construct the chart. Suppose the com- puted value of R is 3.825. a. If subgroups of size six are to be used, compute the value of three-sigma limits for this chart. b. If an X chart based on three-sigma limits is used, what is the difference between the UCL and LCL?

12. An R chart is used to monitor the variation in the weights of packages of chocolate chip cookies produced by a large national producer of baked goods. An analyst has collected a baseline of 200 observations to construct the chart. Suppose the com- puted value of R is 3.825. a. If subgroups of size six are to be used, compute the value of three-sigma limits for this chart. b. If an X chart based on three-sigma limits is used, what is the difference between the UCL and LCL?

Practical Management Science
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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12. An R chart is used to monitor the variation in the weights of packages of chocolate chip cookies produced by a large national producer of baked goods. An analyst has collected a baseline of 200 observations to construct the chart. Suppose the com- puted value of R is 3.825. a. If subgroups of size six are to be used, compute the value of three-sigma limits for this chart. b. If an X chart based on three-sigma limits is used, what is the difference between the UCL and LCL?
Transcribed Image Text:12. An R chart is used to monitor the variation in the weights of packages of chocolate chip cookies produced by a large national producer of baked goods. An analyst has collected a baseline of 200 observations to construct the chart. Suppose the com- puted value of R is 3.825. a. If subgroups of size six are to be used, compute the value of three-sigma limits for this chart. b. If an X chart based on three-sigma limits is used, what is the difference between the UCL and LCL?
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