You are responsible for managing an advertising and promotion project with the following activities (times are given in weeks).
Project Immediate Optimistic Most Likely Pessimistic Expected Activity
Activity Predecessor(s) Time Time Time Time Variance
A none 2 5 14 B none 8 11 14 C A 5 7 9
D A 6 9 12 E B, C, D 1 3 5
a. Using the PERT technique, calculate the Expected Time and Variance for each activity.
b. Using the calculated Expected Times (you may use Most Likely Time if you were unable to complete part a), draw a network diagram labeling each activity with the Letter, Expected Time, ES, EF, LS, and LF. Which activities are on the critical path?
c. What is the probability that the project will be completed within 16 weeks?