Question: Question 37 options: A Quality Analyst wants to construct a control chart for determining whether three machines, all producing the same product, are under control
Question 37 options:
A Quality Analyst wants to construct a control chart for determining whether three machines, all producing the same product, are under control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results:
What is the estimate of the process mean for whenever it is under control?
What is the sample average range based upon this limited sample?
What are the x-bar chart upper and lower control limits?
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