Activity Optimistic Most Likely Pessimistic Expected Time Variance A 3 4 5 (3+4(4)+5)/6 =4 (5-3)/6)2 = 0.111 B 6 7 14 (6+4(7)+14/6 = 8 (14-6)/6)2 = 1.777 C 6 9 12 (6+4(9)+12)/6 = 9 (12-6)/6)2 =1 D 0.5 1 1.5 (0.5+4(1)+1.5)/6= 1 (1.5-0.5)/6)2 = 0.027 E 2 3 10 (2+4(3)+10)/6 = 4 (10-2)/6)2 = 1.777 F 4 5 12 (4+4(5)+12)/6 = 6 (12-4)/6)2 = 1.777 G 1 3 11 (1+4(3)+11)/6 = 4 (11-1)/6)2 = 2.777 a). What is the critical path. b). What is the probability that the project will be completed in 22 weeks