Question: A process that is assumed to be in control with limits of 91 + 2 had sample averages for the X-bar chart of the following:

A process that is assumed to be in control with limits of 91 + 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. Which of the following statement below are correct? Select one: O a. Process mean is out-of-control O b. None of above O c. Not enough information to determine O d. Process mean is in-control
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