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To ensure that a manufacturing process is under control, 40 samples of size 1,000 were drawn, and the number of defectives in each sample was counted. The mean sample proportion was .035. Compute the centerline and control limits for the p chart.21.44 Xr21-44 Random samples of 200 copier machines were taken on an assembly line every hour for the past 25 hours. The number of defective machines is shown here. Are there any points beyond the control limits? If so, what do they tell you about the production process? 3 5 3 2 2 11 12 6 7 5 0 78 2 10 6 4 2 10 5 4 11 10 13 14
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