Question: A range control chart (R-chart) was developed with LCLR=0 and UCLR=2.50. Similarty, an X-bar chart was developed with LCL=15.0 and UCL=24.0. Five (5) wdditional samples

A range control chart (R-chart) was developed with LCLR=0 and UCLR=2.50. Similarty, an X-bar chart was developed with LCL=15.0 and UCL=24.0. Five (5) wdditional 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? Both the procetu range and the process mean are in control. Both the process range and the peceese nyean are out of eoptrol The piocew mean is in control but the pericess tange is net of comirol: Weda net hum enenigh infermatios to deternaine if the proceis is in control or nod

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