Calculate the Operating Characteristics 1. Mean arrival rate = 2 = 12 2. Mean inter arrival time = 3. Mean service rate = u = 15 4. Mean service time = s. Utilization factor =p= 6. Percent idle time = 1 = . Mean waiting time in the queue = W= 8. Mean no. of customers in the queue = Lg= 9. Mean waiting time in the system =W= 10. Mean no. of customers in the system = L = 11. Probability of no customer in the system = Po = 12. Prob. of 3 customers in the system = Pz = 13. Prob. of 3) = is. Probability of more than 3 customers in the system P(n> 3) =