Question: Lets say an operations specialist has measured the standard deviation of all parts for a process to be 0.002921374 for five observation periods. The sample

Lets say an operations specialist has measured the standard deviation of all parts for a process to be 0.002921374 for five observation periods. The sample size is also five parts. The X-double-bar, or average across averages, is 57.258.
what is the upper control limit (UCL)?

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