The following are the number of defects observed on 15 samples of transmission units in an automotive
Question:
(a) Using all the data, compute trial control limits for a U control chart, construct the chart, and plot the data.
(b) Determine whether the process is in statistical control. If not, assume assignable causes can be found and out-of-control points eliminated. Revise the control limits.
Transcribed Image Text:
No. of Defects Sample No. of Defects Sample 1 11 10 12 10 3 24 13 11 4 6. 14 17 5 5 15 21 10 8. 9. 10 15
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a The U chart follows b Point 3 violates the control limits in part b The control lim...View the full answer
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Related Book For
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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