Question: A process that is assumed to be in control with limits of 8 9 + - 2 had sample averages for the x - bar

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?
Yes
No, one or more averages exceeded the limits.
Not enough information to tell.
No, there is a distinguishable trend.
No, two or more consecutive points are very near the lower (or upper) limit.
 A process that is assumed to be in control with limits

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