Manager Of Champion Cooling Company Has Recently Implemented A Statistical Process C 2768010

The manager of Champion Cooling Company has recently implemented a statistical process control method. The accompanying table shows the results of five different samples of walk-coolers that were produced in the previous month. There are 3 units in each sample. Assume that only these five samples are sufficient, and use the data to determine control limits for an R- and X bar charts. Is this process in control? Plot the R and X bar charts.



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