Posted by **selvi** on Monday, June 28, 2010 at 10:11am.

4. An R & D project has a list of tasks to be performed whose time estimates are given in the table

R & D project Time estimates

Activity

i - j

Activity

Name

Time

(days)

To

Time

(days)

tm

Time

(days)

tp

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 9 10

a. Draw the network diagram for the R&D project

b. Find the critical path and calculate the project duration

c. Find the probability that the project is completed in 19 days.

2

3

5

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