Question: A control chart with a 3 sigma management limit line is used to manage the variation in the process mean whose quality characteristics follow
A control chart with a sigma management limit line is used to manage the variation in the process mean whose quality characteristics follow a normal distribution. There are two decisionmaking alternatives to understand the abnormal state of the process as follows.
Alternative : If at least one of the seven points in a row deviates from the control limit it is said to be out of control.
Alternative : If all seven consecutive points are skewed in one direction from the center line, it is said to be out of control.
Calculate the producer risk for these two alternatives.
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