2 (25 Marks) A Project is composed of seven activities whose time estimates are listed in the following table. Activity Estimated duration in weeks i J Optimistic Most likely Pessimestic 2 I 7. 3 1 7 4 2 8 2 S 1 1 1 3 2 14 4 5 6 6 2 8 3 6 15 1. Calculate the expected time, Construct the network, and compute TE TL for each event. (20 marks) 2. Critical path and its duration