Management is concerned about the operation of its 123XYZ work center. From past studies, it knows that
Question:
Management is concerned about the operation of its 123XYZ work center. From past studies, it knows that X̄ is 12.14, the LCL is 11.74, and the UCL is 12.54. The following data were collected for a 20-day period (where each observation is the mean for the processing times for that day):
a. Plot and analyze the data using the control chart developed from the parameters provided.
b. What can you say about the process? Is it under control? Is there anything that bothers you about the process?
Transcribed Image Text:
Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Sample Mean 12.10 12.20 12.15 12.17 12.21 12.15 12.18 12.22 12.16 12.13 12.18 12.17 12.11 12.13 12.14 12.16 12.17 12.13 12.14 12.16
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Related Book For
Managing Operations Across The Supply Chain
ISBN: 9781260547634
4th Edition
Authors: Morgan Swink, Steven Melnyk, Janet L. Hartley, M. Bixby Cooper
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