Question 5 5 Points Table 2 shows the activities, predecessors and time estimates (in months) of a work package of the construction project. Table 2: Activities, predecessors and time estimates of a work package Activity Predecessor Optimistic Likely Pessimistic A 2 3 4 B A 3 4 5 C A 1 2 3 D B 3 5 7 E 3 4 5 F D, E 2 3 4 Required: 1. Draw a network diagram (using the activity-on-node method) for the project. 2. Identify the critical path and calculate the expected duration to complete the project. 3. Calculate the probability of completing the project in 17 months. 4. Calculate the probability of completing the project in 14 months