Question: A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 28.5, and

A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 28.5, and the average range is 3.9. From Table S6.1, the appropriate value of D 3 is 0, and D 4 is 2.115. What are the UCL and LCL, respectively, for this range chart?

		40.2 and 16.8
		8.25 and 0
		11.2 and 0
		32.4 and 24.6
		30.75 and 26.25

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