A manager must determine requirements for waiting space for customers. A priority system is used to process customers, who are assigned to one of two classes when they enter the processing center. The highest-priority class has an arrival rate of 2.8 per hour; the other class has an arrival rate of 1.7 per hour. Both can be described as Poisson-distributed. There are two servers, and each can process customers in an average of 16 minutes. Use Table 1 and Table 2.

a. What is the system utilization? (Round your answer to 2 decimal places.)

b. Determine the number of customers of each class that are waiting for service. (Round your answers to 3 decimal places.)
c. Determine the average waiting time for each class. (Enter your answers in hours. Round your answer to 2 decimal places.)

d. If the manager could alter the assignment rules so that arrival rates of the two classes were equal, what would be the revised average waiting time for each priority class? (Enter your answers in hours. Round your answers to 2 decimal places.)