Question: A process is normally distributed with a process mean of 210 and process standard deviation of 5. If samples of size 8 are taken, what

A process is normally distributed with a process mean of 210 and process standard deviation of 5. If samples of size 8 are taken, what should the upper and lower control limits be set at, such that the ARL in control for the x chart is at least 300? (The upper and lower control limits are to be the same distance from the Center Line)

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