1. True or False: The expected time in a system should equal the expected time in queue plus the expected time in service.

2. True or False: For a queuing system to be feasible in the long run, the arrival rate must exceed the rate of service.

3. True or False: Only two sources of empirical data are necessary for using queuing models, the mean arrival rate and the mean service rate.

4. True or False: Although some service systems may be in a transient mode for a long time, steady state models can be useful for long-range capacity planning decisions.