Question

A process that is assumed to be in control with limits of 89 2 had sample averages for the x-bar chart of the following: 87.1, 87, 87.2, 89, 90, 88.5, 89.5, and 88. Is the process in control?

A) Yes.

B) No, one or more averages exceeded the limits.

C) Not enough information to tell.

D) No, there is a distinguishable trend.

E) No, two or more consecutive points are very near the lower (or upper) limit.

Answer

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