Question 1 Explain the structure of Mathematical Model in your own words

Question 2 Describe Erlang family of distributions of service times

Question 3 Describe the algorithm for solving a linear programming problem by graphical method.

Question 4 Explain the use of finite queuing tables

Question 5 Customers arrive at a small post office at the rate of 30 per hour. Service by the clerk on duty takes an average of 1 minute per customer

a) Calculate the mean customer time

• Spent waiting in line
• Spent receiving or waiting for service

b) Find the mean number of persons

• in line
• Receiving or waiting for service