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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Repair calls. Find the mean and standard deviation of the number of repair calls the appliance shop in Exercise 17 should expect during an 8-hour day.
Exercise 17:
Repairs. The probability model below describes the number of repair calls that an appliance repair shop may receive during an hour.

a) How many calls should the shop expect per hour?
b) What is the standard deviation?
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