An X control chart with three-sigma control limits has UCL = 48.75 and LCL = 42.71. Suppose

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An X̅ control chart with three-sigma control limits has UCL = 48.75 and LCL = 42.71. Suppose that the process standard deviation is σ = 2.25. What subgroup size was used for the chart?

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Applied Statistics And Probability For Engineers

ISBN: 9781118539712

6th Edition

Authors: Douglas C. Montgomery, George C. Runger

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Question Posted: Jul 07, 2018 01:37 PM

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An X control chart with three-sigma control limits has UCL = 48.75 and LCL = 42.71. Suppose

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