Question: A manager wishes to build a control chart for a process. A total of five (05) samples, with five (05) observations each, are collected. The

A manager wishes to build a control chart for a process. A total of five (05) samples, with five (05) observations each, are collected. The corresponding sample means (X-bar) are 14.09, 13.94, 16.86, 18.77, and 16.64, while the ranges are 9.90,7.73, 2.89,7.56, and 3.49, respectively. The lower and upper control limits of the x-bar chart are and_respectively. Select one: a. 18.55, 13.47 b. 19.72, 12.40 c. 16.55, 11.47 d. 12.40, 19.72

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