CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
CENGAGENOW FOR ANDERSON/SWEENEY/WILLIAM
13th Edition
ISBN: 9781337094399
Author: Cochran
Publisher: IACCENGAGE
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Chapter 19.2, Problem 5E

Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is μ = 128.5 and the standard deviation is σ = .4.

  1. a. Construct the x ¯ chart for this process if samples of size 6 are to be used.
  2. b. Is the process in control for a sample providing the following data?
128.8 128.2 129.1 128.7 128.4 129.2
  1. c. Is the process in control for a sample providing the following data?
129.3 128.7 128.6 129.2 129.5 129.0
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