A queuing system with a Poisson arrival rate and exponential service time has a single queue, two servers, an average arrival rate of 80 customers per hour, and an average service time of 1.5 minutes per customer.

a. Average utilization rate of a server (p)

b. The probability of no. customers in the system (Po)

c. Average number of customers in the system (L)

d. Average time in the system (W)

e. Average waiting in line (Wq)

f. Average number of customers in line waiting Lq