3 A partially solved PERT problem is detailed in the table below. Times are given in weeks. 4 5 Activity Variance Pessimist Precedin Optimistic Probable Expected ic 8 Time Time Time Time 7 9 14 6 7 A B 1.361 0 8 A 2 2 8 9 8 12 16 0 10 5 10 1.361 D E F A B 3 4 11 6 8 0 12 B 6 8 10 0 13 G CF 3 4 0 2 2 D 8 1 14 15 2 8 6 16 H I J K 16 H GI E,J 4 6 14 2.778 2.778 0.25 17 2 2 5 18 19 a. 20 b. 21 c. Draw the network diagram. Calculate the expected time for each activity. Enter these values in the appropriate column in the table above Which activities form the critical path? What is the estimated time of the critical path? What are the project variance and the project standard deviation? What is the probability of completion of the project after week 40? 22 d. 23 e. 24 25 26 27 Instructions 01-Ch3 Q2-Ch4 03-Ch8 04-Ch 14 05-Ch 16 06-Ch17 07-Moda 08-ModB 09-Moda