CASE STUDY
Please read the case study given below and answer the questions given at the end.
Systems Software (P) ltd. is planning to develop new software. It has identified the activities in the table below for this software development project and has calculated three times estimates in days for each of the activity.
|
Activity
|
Description
|
Predecessors
|
Optimistic Time
|
Most Likely Time
|
Pessimistic Time
|
|
A
|
Create Objective
|
-
|
1
|
2
|
3
|
|
B
|
Choose Operating System
|
A
|
3
|
5
|
7
|
|
C
|
Generate Algorithm
|
A
|
6
|
10
|
14
|
|
D
|
Choose a Suitable Programming
|
A
|
4
|
6
|
8
|
|
E
|
Write the Program
|
B,C,D
|
8
|
9
|
10
|
|
F
|
Test the Software
|
E
|
2
|
4
|
6
|
|
G
|
Get Approval for Commercialization
|
F
|
1
|
3
|
5
|
Questions:
1. Draw the network diagram; find out the critical path and the expected duration of the project.
2. Calculate the slack time for each of the activities.
3. Calculate the probability of completing the project in 30 days.