Each computer user is linked to a network, and each produces in average 48 packets per second. For every customer/user, the arrival times of her packets are exponentially distributed. The lengths of packets are also exponentially distributed, with a mean 125 bytes. It takes 1/8000 seconds to deliver (or serve) each byte.

Questions to Answer:

• mean wait in the queue,
• mean number in the queue,
• the mean wait in the system,
• mean number in the system and
• proportion of time the server is idle.