non-critical activities of the project and ource. Question 6: A small project is composed of seven activities, whose time estimates are listed below. Activities are identifies by their beginning (1) and ending (j) note numbers: Activity Estimated Durations (in Days) Optimistic Most Likely 1-2 2 2 1-3 2 8 1-4 4 4 2-5 2 2 3-5 4 10 4-6 4 10 5-6 6 12 Pessimistic 14 14 16 2 28 16 30 Required (a) Draw the project network. (b) Find the expected duration and variance for each activity. What is the expected project length