i need help with question 2

i need help with question 2

this is the answer for part 1, i need help with part 2

0,3 86 d. 5 12 b. 11 Use the network diagram to answer the questions below: 1. Determine ES. EF. LS, LF and slack for each activity. 2. What is the expected completion time for the project? 3. Find the critical path for the network. 4. State the non-critical activities. 5. Explain what it means if an activity has a slack of zero. 6. Explain what it means if an activity has a slack of non-zero. QUESTION 2 On Blackboard, go to Assignments and print the file "Project Management". Using the table in problem 3.17, answer the following questions: a) Determine the expected time for each activity, b) Determine the variance and standard deviation for each activity. c) Using the critical path A-C-F-H-J-K. determine the expected completion time for the project. d) Determine the variance and standard deviation for the project, e) What is the probability of completing the project in less than 40 weeks? f) What is the probability of completion of the project before week 36? 11:43 Answer Activity on-Arrow on diogramy XI Soal 2 b C d Jum OH a. Ruo inmal MOOSE 3 NO ullo che OOO EF 1-2 4 3 7 3 D 5 5 3 11 tu 9-5 9 1 12 3 13.5 2 5 12 S 12 5-4 12 14 12 14 G 90 1 20 5-6 1 13 1612 3 13 1612 30 ES: Early start time Erwin + ES Le last finish time 1: LF- Duration Siatk) LF-EF OY LEE Cilical path acide with the state NO NO NOR 2) expected completion time = 20 time period. 3) critical path: b-e-f-g 4) non critical Activities: a, c, d, h, i 5) if an activity has zero slack, then that Activity can't be delayed. And it is considered as a critical Activity 6) if an activity has slack value (l,e non zero) then that Activity can be delayed by its slack time, without affecting the end date. Hence, this is a non critical Activity. .. 3.17 Bill Fennema, president of Fennema Construction, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Draw the AON network and answer the questions that follow. 24 Time Estimates (in weeks) Immediate Most Activity Predecessor(s) Optimistic Likely Pessimistic A 4 8 10 B A 2 8 A 8 12 16 D A 4 6 10 E B 1 2 3 F EC 6 8 20 G E, C 2 3 4 H F 2 2 2 1 F 6 6 6 J D, G, H 4 6 12 K I, J 2 2 3 a) What is the expected (estimated) time for activity C? b) What is the variance for activity C? c) Based on the calculation of estimated times, what is the critical path? d) What is the estimated time of the critical path? e) What is the activity variance along the critical path? f) What is the probability of completion of the project before week 36? PX