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Answer these questions: a. Construct a c-chart to monitor this process. b. Plot the c-chart graph. c. indicate if the process was out of control at any time

Answer these questions: a. Construct a c-chart to monitor this process. b. Plot the c-chart graph. c. indicate if the process was out of control at any time

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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DIMU 2105 assignmen QUESTION 2 One of the stages in the process of making denim cloth at the Southern Mills Company is to spin cotton yarn onto spindles for subsequent use in the weaving process. Occasionally the yarn breaks during the spinning process, and an operator ties it back together. Some number of breaks is considered normal; however, too many breaks may mean that the yarn is of poor quality. In order to monitor this process, the quality-control manager randomly selects a spinning machine each hour and checks the number of breaks during a 15-minute period. Following is a summary of the observations for the past 20 hours: Sample 1 2 3 4 5 6 7 8 9 10 Number of Breaks 3 2 4 1 5 3 2 4 0 2 Sample 11 12 13 14 15 16 17 18 19 20 Number of Breaks 3 4 6 7 8 6 5 7 8 6 Answer these questions: a. Construct a c-chart to monitor this process. b. Plot the c-chart graph. c. indicate if the process was out of control at any time
Transcribed Image Text:DIMU 2105 assignmen QUESTION 2 One of the stages in the process of making denim cloth at the Southern Mills Company is to spin cotton yarn onto spindles for subsequent use in the weaving process. Occasionally the yarn breaks during the spinning process, and an operator ties it back together. Some number of breaks is considered normal; however, too many breaks may mean that the yarn is of poor quality. In order to monitor this process, the quality-control manager randomly selects a spinning machine each hour and checks the number of breaks during a 15-minute period. Following is a summary of the observations for the past 20 hours: Sample 1 2 3 4 5 6 7 8 9 10 Number of Breaks 3 2 4 1 5 3 2 4 0 2 Sample 11 12 13 14 15 16 17 18 19 20 Number of Breaks 3 4 6 7 8 6 5 7 8 6 Answer these questions: a. Construct a c-chart to monitor this process. b. Plot the c-chart graph. c. indicate if the process was out of control at any time
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