Page 252 - DCOM303_DMGT504_OPERATION_RESEARCH

Unit 12: Critical Path Method and PERT

Notes
Figure 12.19: Network Diagram

6 7

2 14 14
6
6 2 5 6

0 0

9 10
1 4 7

7 22 22

4
5 4

3 8
12 8

4 2

Table 12.8: Time Estimates for R&D Project

Activity Activity Name T0 tm tp
I–j ( in days)
1-2 A 4 6 8
1-3 B 2 3 10
1-4 C 6 8 16
2-4 D 1 2 3
3-4 E 6 7 8
3-5 F 6 7 14
4-6 G 3 5 7
4-7 H 4 11 12
5-7 I 2 4 6
6-7 J 2 6 10

1. Draw the project network.
2. Find the critical path.
3. Find the probability that the project is completed in 19 days. If the probability is less that
20%, find the probability of completing it in 24 days.

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