Mathematics, 19.03.2020 20:47 zoebtharpe

Historically, the average time to service a customer complaint has been 3 days and the standard deviation has been 0.50 day. Management would like to specify the control limits for an chart with a sample size of 10- and 3- sigma limits. Suppose the average service time from the next 10 samples yielded the following result: 3.2, 2.1, 3.6, 2.8, 3.9, 3.5, 2.7, 4.1, 2.6, and 3.3. What conclusion can be drawn?

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Historically, the average time to service a customer complaint has been 3 days and the standard devi...