Q.4. Solve the following problem using the following data: Task Predecessor ta tm tb A 1 9. 2 5 8. C 1 3 ---- D A 4 10 25 E A 3 7 12 F 10 15 25 G C 9 14 H D,E 7 I D,E, F 1 6. J D, E, F, G 2 10 K H, I, J 3 3 a. Draw a pert Diagram b. Compute Expected completion times for all tasks c. Find the critical path and the expected completion time d. What is the completion time that gives you 75% chance of success 314