Question: When a control chart is under control approximately 6 8 percent of the sample averages will fall within + - 1 sd of the centerline.

When a control chart is under control approximately 68 percent of the sample averages will fall within +-1 sd of the centerline.
True
False
QUESTION 7
When an assignable cause is present, the process is considered to be unstable, out of control, or beyond the expected normal variation.
True
False
When a control chart is under control approximately 68 percent of

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