Question: Control limits for an xChart have been determined as: UCLx = 96.4 and LCLx = 93.2 (a) Sample averages for the most recent five samples,

Control limits for an xChart have been determined as: UCLx = 96.4 and LCLx = 93.2

(a) Sample averages for the most recent five samples, in sequential order, are 93.7, 93.8, 94.7, 95.4, and 96.3. What should be concluded about the process average? Should some action be taken? Why or why not?

(b) What would you conclude about the process average if the sample means, in sequential order, were 95.4, 94.9, 96.1, 95.6, and 95.2?

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