The rate of service is around 45 customers per hour.
Question
1)	What is the average rate of arrivals?
2)	Probability that No customers are being served or in the queue (P0)
3)	The probability that 10 customers are in the queuing system (Pn)
4)	The average number of customers in the queuing system
	(i.e., the customers being serviced and in the waiting line) (Ls)
5)	The average number of customers in the waiting line (Lq)
6)	The average time a customer spends in the total queueing system
	(i.e., the customers being serviced and in the waiting line) (Ws)
7)	The average time a customer spends waiting in the queue to be served (Wq)
8)	The probability that the server is busy (i.e., the probability that the
	customer has to wait) known as utilization factor (U)
9)	The probability that the server is idle (i.e., the probability that a customer
	can be served (I)