S6.29 The overall average of a process you are attempting to monitor at Feryal Erhun Enterprises is

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• S6.29 The overall average of a process you are attempting to monitor at Feryal Erhun Enterprises is 50 units. The average range is 4 units. The sample size you are using is n = 5.

a) What are the upper and lower control limits of the 3-sigma mean chart?

b) What are the upper and lower control limits of the 3-sigma range chart?

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