5. Given the following details of some project tasks: Task/Activity Estimated Duration Predecessor None 1 day 3 days 4 days 2 days 1 day 3 days 3 days 1 day 2 days 5 days C, D G, H a. Draw a Network Diagram (Activity on the Node type) b. Find the Critical Path. Write down the task sequence for the critical path c. What is the minimum estimated duration for the whole project? d. Apply the PERT technique based on table below and repeat steps b and c (show your calculation steps). What has changed and what has remained the same? Optimistic Estimation 1 day 3 days 3 days 2 days 1 day 2 days 2 days 1 day 2 days 4 days Most Likely Estimation 1 day 3 days 4 days 2 days 1 day 3 days 3 days 1 day 2 days 5 days Pessimistic Estimation 2 days 5 days 5 days 3 days 2 days 5 days 4 days 1 day 3 days 8 days Task/Activity e. Traverse the network diagram twice and find the lag time for all activities. f. What event(s) could change the critical path of the project