OPERATIONS RESEARCH

Gil is a system engineer in KCA University. He has decided to install a new computer system to be used by the School of Business. Gil has identified nine activities required to complete the installation.

The table below provides a summary of the activities durations.

Activities Time (weeks)

Optimistic Most likely Pessimistic

1 - 2 4 6 10

1 - 3 3 5 9

2 - 4 7 12 20

2 5 3 5 8

3 4 6 11 15

4 5 4 6 11

4 6 3 9 14

5 6 2 4 8

6 7 3 5 9

Required:

1. The expected time and variance of each activity. [4 Marks]
2. A project network for the activities. [4 Marks]
3. The expected completion time and variance of the project. [2 Marks]