Question: You are developing an X-bar chart based on sample means. You know the standard deviation of the process is 8, the desired confidence level is

You are developing an X-bar chart based on sample means. You know the standard deviation of the process is 8, the desired confidence level is 96.4 percent (you need to get Z from standard normal distribution table), the average of the sample means is 24, and number of observations for each sample is 4. Which of the following is your LCL?

16.8

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