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Calculate the average of the five service times and compare it to the mean of the service-time distribution.

Frank’s Barber Shop is a popular local barber shop. He estimates that the time required to serve a customer on each visit has a uniform distribution between 15 minutes and 45 minutes.
Simulate the service times for five customers by using the following five random numbers: 0.6905, 0.1740, 0.0443, 0.5975, 0.1178.
Calculate the average of the five service times and compare it to the mean of the service-time distribution.
Use Excel to generate 500 random observations and calculate the average. Compare this average to the mean of the service-time distribution.