Refer to Exercise 8-18. Construct an OC curve for the p-chart. If the process proportion of dissatisfied customers were to rise to 7%, what is the probability of not detecting this shift on the first sample drawn after the change has taken place? What is the probability of detecting the shift by the third sample?
In exercise
TABLE 8-16

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Number of Dissatisfied Customers Number of Dissatisfied Customers Sample Sample 12 13 14 15 16 17 18 19 20 4 4 12 10