Question: Consider the hospital emergency room waiting time data in Exercise
Consider the hospital emergency room waiting time data in Exercise 8.16. Set up an EWMA control chart for monitoring this process using = 0.2. Does the process seem to be in statistical control?
p50 4.55; p84 7.34; p84 p50 7.344.552.79
Answer to relevant QuestionsConsider the “minute clinic” waiting time data in Exercise 6.66. These data may not be normally distributed. Set up a CUSUM chart for monitoring this process. Does the process seem to be in statistical ...Rework Exercise 9.1 using a standardized CUSUM. Exercise 9.1 Consider a process with 0 = 10 and = 1. Set up the following EWMA control charts: (a) = 0.1, L = 3 (b) = 0.2, L = 3 (c) = 0.4, L = 3 Reconsider the data in Exercise 9.9. Set up and apply an EWMA control chart to these data using = 0.1 and L = 2.7. Show how to modify the control limits for the moving average control chart if rational subgroups of size n > 1 are observed every period, and the objective of the control chart is to monitor the process mean.
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