4. The sample means were calculated for 30 samples of size n510 for a process that was...

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4. The sample means were calculated for 30 samples of size n510 for a process that was judged to be in control. The means of the 30 x -values and the standard deviation of the combined 300 measurements were x 520.74 and s5.87, respectively. determine the upper and lower control limits for an x chart. Construct the control chart and explain how it can be used.

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Introduction To Probability And Statistics

ISBN: 9780357114469

15th Edition

Authors: William Mendenhall Iii , Robert Beaver , Barbara Beaver

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