Assume a comapny recieves 5.431 calls per/hour during a 1-hour period.
What is the average inter-arrival rate during that period?
Average service time on each call is 3 minutes. If there is only one phone operating during that 1 hour, how busy would it be?
Assume that bot inter-arrival time of calls and service time follow an exponential distribution. How long would be the average waiting time of a call during the 1-hour period?