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A process is being controlled with a control letter for the dissatisfied fraction. The process average...

A process is being controlled with a control letter for the dissatisfied fraction. The process average has been determined to be 0.8 and the procedure requires taking daily samples of 400 items. Calculate control limits with two decimals and tell if the quality of the process is good or bad.

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Answer #1

It is difficult to say anything about quality of process with this data. We have no data to check if process is under control or not. Also we have no information regarding tolerance for the process to comment on process quality.

Kindly refer image for the control limits.

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