Suppose that a 2-sigma control chart is used to monitor a variable that can be taken to
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(a) What is the probability that an observation will lie outside the control limits when the process is still in control?
(b) If the mean of the variable increases to one standard deviation above the control value, what is the probability that an observation will lie outside the control limits.' What is the average run length for detecting this change?
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Related Book For
Probability And Statistics For Engineers And Scientists
ISBN: 9780495107576
3rd Edition
Authors: Anthony Hayter
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