An EWMA chart with ?= . 0 5 and L= . 3 07 is to be used to
Chapter 15, Problem 115SE(choose chapter or problem)
Problem 115SEAn EWMA chart with λ= . 0 5 and L= . 3 07 is to be used to monitor a process. Suppose that the process mean is μ0 = 10 and σ = 2.
(a) Assume that n = 1. What is the ARL without any shift in the process mean? What is the ARL to detect a shift to μ = 12.
(b) Assume that n= . 4 Repeat part (a) and comment on your conclusions.
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