Question: A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each

A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each sample. The sample means X-bar) are: 14,09, 13.94, 16.86, 18.77, and 16.64 respectively. Also, the corresponding ranges are: 9.90, 7.73, 289,7.56, and 3.49 respectively. The lower and upper control limits of the R-chart are respectively Select one: a. None is correct O b. 0,12.32 C.0,13.32 d. 1. 10.5 De 0 14.40

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