Question: Historically the average timeto service a customer has been 3 days and the standard deviationhas been . 5 day. Management would like to specify the

Historically the average timeto service a customer has been 3 days and the standard deviationhas been .5 day. Management would like to specify the control limits for an x chart witha sample size of 10- and 3- sigma limits the lcl for the chart would be

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