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If R chart is in control then X bar chart must also be in control. True _____ False________ Random variation falls within the control limits.
- If R chart is in control then X bar chart must also be in control.
True _____ False________
- Random variation falls within the control limits.
True ______ False______
- For defective unit quality control, when the sample size is constant, one can use eitherp chart ornp chart.
True ______ False______
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