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A range control chart (R-chart) was developed with LCLR = 0 and UCLR = 2.90. Similarly, a mean controlchart(x-bar chart) was developed with LCLX =

A range control chart (R-chart) was developed with LCLR = 0 and UCLR = 2.90. Similarly, a mean controlchart(x-bar chart) was developed with LCLX = 150 and UCLX = 240.00. 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 Mean of each sample 1.75 29.5 2.42 22.3 2.75 17.4 2.04 20.1 2.80 18.9 Group of answer choices Both the process range and the process mean are in control. Both the process range and the process mean are out of control. The process range is in control, but the process mean is out of control. We do not have enough information to determine if the process is in control or not. The process is in control but a warning signal should be issued

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