Question: Suppose that there are p = 2 quality characteristics, and in correlation form both variables have variance unity and the correlation coefficient is 0.8. The

Suppose that there are p = 2 quality characteristics, and in correlation form both variables have variance unity and the correlation coefficient is 0.8. The in-control value of the process mean vector is μ′ = [0, 0], and we want to design an MEWMA control chart to provide good protection against a shift to a new mean vector of y′ = [1, 1]. If an in-control ARL0 of 200 is satisfactory, what value of λ and what upper control limit should be used? Approximately, what is the ARL1 for detecting the shift in the mean vector?

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Select l 02 with an UCL H 965 This gives an ARL1 between 549 and 1020 m... View full answer

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