Customers arrive to a finite queueing system with a mean time between arrivals of 6 minutes. There are three servers. The mean service time is 15 minutes. Interarrival and service times have exponential distributions. There are two spaces for customers to wait when all three servers are busy. Customers who arrive when the servers are all busy and both space are full, balk. Fill in the missing entries in the table below. You should be able to do this with simple arithmetic. It is not necessary to use the Queueing Excel add-in.