Qn.1:

A Tailor observes the time required to complete a nice fashion takes an exponential distribution with a service rate mean ( of 50 minutes. With the first come first serve principle, the arrival rate ( of customers are 7.

1. Define the term queuing (2 marks)
2. Which are the 2 queuing systems (2 marks)
3. Discuss the required conditions for a single channel facility (6 marks)
4. How long will it take;
5. The customers to wait in the queue on average(4 marks)
6. How many customers are waiting in the system (4 marks)
7. Determine the probability that the system is idle; P (idle)(4 marks)