In the table given below, Calculate: a. What is the expected task time and the variance of each activity. b. Calculate EST and EFT of each node. c. Which is the Critical path. d. What is the probability that project will complete in 30 weeks and 42 weeks. (6 marks) Duration (days) Jobs (i- Optimistic Time Most Likely time Pessimistic time j) (to) (1) (tp) 1-2 3 6 15 1-6 2 5 14 2-3 6 12 30 2-4 2 5 8 3-5 5 11 17 4-5 3 6 15 6-7 3 9 27 5-8 1 4 7 7-8 4 19 28 Add file