Question: 1) What is the type I error for x-bar control charts with k = 3.11, and sample size of n=4? 2) Assume the mean shift

1) What is the type I error for x-bar control charts with k = 3.11, and sample size of n=4? 2) Assume the mean shift is 1.5s (s is the process standard deviation), what is the type II error for detecting this mean shift using this control chart?

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