1. (12) Customer calls arrive to a service center as a Poisson process at a rate of 100 per hour. Call durations are triangularly distribution with minimum 0.5 minutes, mode 4 minutes and maximum 10 minutes. a. (5) Compare the CV of the number of calls received in 10 minutes versus the number of calls received in 4 hours. b. (5) Compare the CV of a single call duration versus that of the duration of 20 calls back-to-back. c. (2) Is CV an absolute or relative measure of variability