The activities and time estimate (in weeks) for various activities are illustrated below: Activity A ano - - kh B C D E F Preceding Activity A B C,B D Optimistic 1 8 2 1 6 4 Time Estimates Most likely 2 10 4 2 8 3 Pessimistic 3 12 6 3 10 8 Draw the network diagram? Determine the critical path Calculate EST, LST, EFT and LFT of the activities on the critical path? Detriment the average estimated duration of the project? What is the probability of finishing the project with in 20 weeks?