What is the critical path?

Activity Optimistic time Most likely time Pessimistic time Expected time Variance A 8 10 12 B 4 10 16 4 5 6 D 6 8 10 E 4 7 12 F 6 7 9 G 4 8 12 H 3 3 3 B(10) D(8) 17.17) A(10) H(3) 0(5) E(7.33) G(8) What is the critical path? What is the probability of completing the project (along the critical path) within 36 weeks? What is the probability of completing the project (along the critical path) within 40 weeks? By how many weeks are we 99% sure of completing the project (along the critical path)