Question: 16. The supervisor of a stenographic pool is developing control charts for typing reports and memorandums. Random samples of 30 pages of the daily output
16. The supervisor of a stenographic pool is developing control charts for typing reports and memorandums. Random samples of 30 pages of the daily output have been se- lected and proofread. The fractions defective for 15 samples were recorded as follows: 0.067, 0.10, 0.133, 0.133, 0.067, 0.0, 0.10, 0.033, 0.10, 0.033, 0.067, 0.167, 0.200, 0.067, 0.033. Does the process appear to be in control? (Use 30 control limits.) Under what circumstances would a chart of these control limits be useful?
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