Question: A range control chart (R-chart) was developed with LCR-O and UCLR-2.90 Similarly, an x-bar chart was developed with LCL-15.0 and UCL-24.0. Five (5) additional samples

A range control chart (R-chart) was developed with LCR-O and UCLR-2.90 Similarly, an x-bar chart was developed with LCL-15.0 and UCL-24.0. Five (5) additional samples of size 4 were taken from a process. The means and ranges of the five samples are given in the table below. Is the process in control? Range of each sample 1.75 Mean of each sample 29.5 2.42 22.3 2.75 17.4 2.04 20.1 2.80 18.9 A The process mean is in control, but the process range is out of control B. We do not have enough information to determine if the process is in control or not C. A warning signal should be issued. D. Both the process range and the process mean are out of control. E Both the process range and the process mean are in control. Aggregate Planning is A. the activity of matching supply of output with demand over the short time range. B. the activity of developing a plan that combines the efforts of the firm and its distributors. C. All of the above D. the activity of matching supply of output with demand over the medium time range. E. the activity of developing a plan that combines the efforts of the firm and its suppliers

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