Pessimistic Time (Days) Activity Immediate Optimistic Most Likely Predecessor Time (Days) Time (Days) - 4 6 - 2 5 A T 4 8 B,C 5 7 14 12 9 - (a) Calculate Expected Time and Variance for the activities indicated and complete the table above. a + 4m +b g? = [(b-a)/6] On a separate sheet of paper, calculate the values of t (Expected Time) and sigma squared (Variance) and then fill up the table below: Activity Immediate Optimistic Most Likely Pessimistic Expected Variance Predecessor Time (Days) Time (Days) Time (Days) Time 468 - 25 14 4 8 12 B, C 5 7 (6) Draw the Precedence Diagram for the above project complete with ES, EF, LS, and LF. Draw the Precedence Diagram (Network) on a separate sheet of paper and then fill up the table below: Activity Immediate Expected ES EF Slack Activity Predecessor Time T P Critical Path? Path? (c) Compute the Critical Path and calculate the Project Completion Time. (d) What is the probability that the project will be completed by 22 days? o? = [(b-a)/6] T-E(T)