The sample means were calculated for 30 samples of size n = 10 for a process that

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The sample means were calculated for 30 samples of size n = 10 for a process that was judged to be in control. The means of the 30 x̅-values and the standard deviation of the combined 300 measurements were x̅ = 20.74 and s = .87, respectively.

a. Use the data to determine the upper and lower control limits for an x̅ chart.

b. What is the purpose of an x̅ chart?

c. Construct an x̅ chart for the process and explain how it can be used.

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Introduction To Probability And Statistics

ISBN: 9780495389538

13th Edition

Authors: William Mendenhall, Robert J. Beaver, Barbara M. Beaver

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Question Posted: Oct 01, 2018 02:03 PM

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The sample means were calculated for 30 samples of size n = 10 for a process that

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a The upper and lower control limits are b Control charts are used to monitor the process variab...View the full answer

Introduction To Probability And Statistics

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