Question: Since the presence of a point outside control limits for the mean indicates trouble, how often would we be making the mistake of looking for

Since the presence of a point outside control limits for the mean indicates trouble, how often would we be making the mistake of looking for nonexistent trouble if we used

(a) 1-sigma limits.

(b) 2-sigma limits? Assume normality.

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a With 1sigma limits we would be looking for only a 1326 chance of obse... View full answer

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