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

Statistical Quality Control. You are developing

Statistical Quality Control. You are developing an X-bar chart based on sample means. You know the standard deviation of the process is 4, the desired confidence level is 99.86 percent (i.e., z = 3), the average of the sample means is 20, and number of observations for each sample is 4. Which of the following is your LCL? 0 32 O 12 O 8 O 14

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