Question: You are developing an X-bar chart based on sample means. You know the standard deviation of the sample means is 4 , the desired confidence

You are developing an X-bar chart based on sample means. You

You are developing an X-bar chart based on sample means. You know the standard deviation of the sample means is 4 , the desired confidence level is 99.7 percent, and the average of the sample means is 24 . Which of the following is your UCL

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