Question: Refer to Exercise 8-36. Set up 2Ï control limits. What is the probability of detecting a change in the process average number of dietary errors

Refer to Exercise 8-36. Set up 2Ïƒ control limits. What is the probability of detecting a change in the process average number of dietary errors per 100 trays to 8 on the first sample drawn after the change? Explain under what conditions you would prefer to have these 2Ïƒ control limits over the traditional 3Ã³ limits.
TABLE 8-22

Number of Dietary Errors Number of Dietary Errors Sample Number Sample Number 15 16 17 18 19 20 21 12 16 10 24 25 12 13 10

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