Question: Suppose that we construct a 2-sigma x-bar control chart and the upper control limit is 30.545 and the central line is 26.545. If we construct

Suppose that we construct a 2-sigma x-bar control chart and the

Suppose that we construct a 2-sigma x-bar control chart and the upper control limit is 30.545 and the central line is 26.545. If we construct instead a 3-sigma control chart, which of the following would be the upper control limit? O 32.545 O 20.545 O 31.545 O 33.545 34.545

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