Question: The population mean and standard deviation for a process for which we have a substantial history are 1 2 0 and 1 9 . 3

The population mean and standard deviation for a process for
which we have a substantial history are120 and19.39,
respectively. For the variable control chart, a sample size of 16
will be used. What is the three-sigma upper control limit for the
process?(Round to two decimal places)

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