1. A process that is assumed to be in control with the UCL and 90 of the LCL of 86 had sample averages for the x-bar chart of the following: 87.5, 88.1, 89, 88.2, 89, 89.1, 88.5, 88.6, and 89. Is the process in control?

A. yes

b. no, one or more averages exceed the limits

c. no, there is not distinguishable trend

d. no, most of the sample averages are above the centerline

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