Problem 2

Draw the network for the following project. Perform the CPM calculations on the basis of the most

likely durations. Pick the longest three paths. Calculate the expected duration and the standard

deviation for each path. Considering all three paths, what is the duration of the project with at

least a 90% confidence level?

Activity

A

BCDEFGHI

с

IPA

A, B

B

D

D, E

C, F, G

C, G

H, I

Optimistic (To)

4363547632

3

6

5

4

3

2

Duration (Days)

Most Likely (Tm)

6494750832

10

Pessimistic (Tp)

11

6

15

11

10

8

16

10

5

2