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

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 percent, and the average of the sample means is 20. Which of the following is your LCL?
You are developing an X-bar chart based on sample means. You

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