Question: Process time at a workstation is monitored using sample mean and range control charts. Six samples of n = 10 observations have been obtained and

Process time at a workstation is monitored using sample mean and range control charts. Six samples of n = 10 observations have been obtained and the sample means and ranges computed (in minutes):

a. Using the factors in Table 10-2, determine the upper and lowrer limits for sample mean and range control charts.
b. Is the process in control?
Table 10-2

control charts. Six samples of n = 10 observations have been obtained

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a For n 10 from Table 102 A2 031 D3 022 and D4 178 Averaging the me... View full answer

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