Reconsider the situation in Exercise 11.1. Suppose that the sample mean vector and sample covariance matrix provided were the actual population parameters. What control limit would be appropriate for phase II for the control chart? Apply this limit to the data and discuss any differences in results that you find in comparison to the original choice of limits.
Answer to relevant QuestionsReconsider the situation in Exercise 11.2. Suppose that the sample mean vector and sample covariance matrix provided were the actual population parameters. What control limit would be appropriate for phase II of the control ...Consider a T2 control chart for monitoring p = 10 quality characteristics. Suppose that the subgroup size is n= 3 and there are 25 preliminary samples available to estimate the sample covariance matrix. Calculate both the ...Consider the data shown in Table 12E.1. The target value for this process is 200. (a) Set up an integral controller for this process. Assume that the gain for the adjustment variable is g = 1.2 and assume that = 0.2 in ...Set up a 28-4 fractional factorial design. Verify that this is a resolution IV design. Discuss the advantage of a resolution IV design relative to one of lower resolution. An article in Biotechnology Progress (2001, Vol. 17, pp. 366-368) described an experiment to investigate nisin extracti0n in aqueous two-phase solutions. A two-factor factorial experiment was conducted using factors A = ...
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