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, 1877, and 16.64 respectively. Also, the corresponding ranges are: 9.90, 7.73.6.89. 7.56, and 7.5 respectively. The lower and upper control limits of the R-chart are respectively Select one: O a. 0, 18.05 C. b. None is correct O c.0.13.32 O d. 0 15.22 e 1.16.22

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