Question: Process time at a workstation is monitored using sample mean and range control charts. Six samples of n = 9 observations have been obtained and

Process time at a workstation is monitored using sample mean and range control charts. Six samples of n = 9 observations have been obtained and the sample means and ranges computed as 0.5 (in minutes).

Determine the upper and lower limits for the range control chart.Process time at a workstation is monitored using

Process time at a workstation is monitored using sample mean and range control charts. Six samples of n = 9 observations have been obtained and the sample means and ranges computed as 0.5 (in minutes). Determine the upper and lower limits for the range control chart. 1.91, 2.96 0.09, 0.91 3.24, 4.24 4.24, 6.96

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