# PERT network, Critical Path Activities

21. Given the following network with activities and times estimated in days.

(see attached file for diagram and chart)

Activity

Optimistic Most Probable

Pessimistic

A 2 5 6

B 1 3 7

C 6 7 10

D 5 12 14

E 3 4 5

F 8 9 12

G 4 6 8

H 3 6 8

I 5 7 12

J 12 13 14

K 1 3 4

a. What are the critical path activities?

b. What is the expected time to complete the project?

c. What is the probability the project will take more than 28 days to complete?

https://brainmass.com/statistics/probability/pert-network-critical-path-activities-87927

#### Solution Summary

Given the network with activities and times estimates the solution finds out the critical path activities, calculates the expected time to complete the project and the probability the project will take more than 28 days to complete.

$2.19