Question: . An X chart with three-sigma limits has parameters as follows: UCL = 104 Center line = 100 LCL =96 n=5 Suppose the process quality

An X chart with three-sigma limits has parameters as follows:

UCL = 104 Center line = 100 LCL =96 n=5 Suppose the process quality characteris-
tie being controlled is normally distrib-
uted with a true mean of 98 and a standard deviation of 8. What is the probability that the control chart would exhibit lack of control by at least the third point plotted?

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