After observing a queuing system with three servers for some
time, an analyst estimates that, on the average, the efficiency
of the servers is 2/3. The average number in the queue is 3.
Customers are in the queuing system for an average of 30 minutes
each. Although the time between arrivals and the service times
are random variables, they do not seem to depend on the number
of customers in the system. Arriving customers never balk.
Compute the arrival rate into the system and service rate of