Question: Consider a system with single server to serve customers. The customers' arrival rate is 5 per hour and the server's service rate is 10 per hour. If we take a look of the system at several random times, shall we observe a queue of customers in the system? Explain the reason.
Scenario 1: Assume the service rate is 10 per hour, Deterministic (D)
Scenario 2: Assume the service rate is 10 per hour, mindless (M)
Scenario 3: Assume all the 5 customers arrive within a span of 20 minutes.