1. Assume the longest path thru this network (critical path) is C-G-H-I. Based on this path, what is the variance and standard deviation for this network.

Activity Optimistic (a) Most likely (m) Pessimistic (b) Expected Time te = (a + 4m + b)/6 Variance 02 = (b - a)2/36 Standard Deviation =sqrt(variance) A 2 5 8 8 5 1 1 B 2 3 4 0.111 0.333 C 5 10 15 10 2.778 1.667 D D 1 8 9 7 1.778 1.333 E 5 10 5 8.333 0 0 F 2 5 8 5 1 1 G 3 10 11 9 1.778 1.333 H 2 6 10 6 1.778 1.333 1 1 1 2 3 2 0.111 0.333 a) Assume the longest path thru this network (critical path) is C-G-H-I. Based on this path, what is the variance and standard deviation for this network