Determine the upper and lower control limits for a mean chart, if you choose to use a sample size of…

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?