fects observed on 24 samples of five printed circuit boards: 7, 6, 8, 10, 24, 6, 5, 4
Chapter 16, Problem 16-25(choose chapter or problem)
fects observed on 24 samples of five printed circuit boards: 7, 6, 8, 10, 24, 6, 5, 4, 8, 11, 15, 8, 4, 16, 11, 12, 8, 6, 5, 9, 7, 14, 8, 21. (a) Using all the data, compute trial control limits for a U control chart, construct the chart, and plot the data. (b) Can we conclude that the process is in control using a U chart? If not, assume assignable causes can be found, list points and revise the control limits.
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