### Overall average on a process you are attempting to monitor

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##### Reference no: EM13759697

The overall average on a process you are attempting to monitor is 50 units. The average range is 4 units. The sample size is 5. What are the upper and lower control limits of a 3 sigma mean chart?

A. ( i already did this)Upper control limit is 52.31 and the lower is 47.69.

B. What are the upper and lower control limits of 3 sigma range chart??

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