The overall average on a process you are attempting to monitor is 50 units. The process

QUESTION:

The overall average on a process you are attempting to monitor is 50 units. The process standard deviation is 1.72. Determine the upper and lower control limits for a mean chart, if you choose to use a sample size of 5.

(a) Set z = 3.

(b) Now set z = 2. How do the control limits change?


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