only need help with 7. A) and B)

COLOI- Activity Optimistic Time Estimate (weeks) Most Likely Time Estimates (weeks) Pessimistic Time Estimates (weeks) Immediate Predecessor (s) Expected time te = t0 + 4tm + tp / 6 2 3 5 none 3.16 B 2.5 4 5 A 3.91 5 7 8 6.83 D 3 5 7 B, C 5 4 7 14 B, C 7.66 F 2 5 8 D 5 G 4 5 6 E 5 H 6 6 8 F 6.33 1 4 8 11 G 7.83 J 2 3 3 H1 2.83 4. Using the information given, construct a network diagram using AON notation. NAONA 1 5. Using the information given, calculate the expected time for each of the project activities. 7. Using your results from Problems 4 and 5, a. Calculate the completion time for this project. b. Identify the activities included on the critical path of this project