Question: You are working as a quality control manager for FedEx and are responsible for delivery time customer satisfaction. Historically, the worldwide average delivery time is

You are working as a quality control manager for FedEx and are responsible for delivery time customer

satisfaction. Historically, the worldwide average delivery time is 19.9 days with a standard deviation of 6.483

days. You select 61 random deliveries over the course of a few months. Given your historical parameters still

hold true, what is the probability that the average time until delivery is between 19.95 and 20.27 days?

A. 0.0044 B.0.1481 C. 0.2376 D. 1

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