2. Draw the network diagram based on the above table and find out the critical path using the PERT analysis based estimated time in question 1. Show all your steps clearly, (20 marks) 4 marks for activity network diagram, 14 marks for related calculation of ES, EF, LS and LF, 2 marks for mentioning slack time for each activity and identification of correct critical path Total =20 Marks ) Table 1: Planned Project Activities \begin{tabular}{|l|l|l|l|l|l|} \hline Activities. & Precedence & Pessimistic estimated time p & Realistic estimated time r & Optimistic estimated time o & Estimated time ET based on pert formula \\ \hline A & & 8 & 5 & 3 & \\ \hline B & A & 5 & 3 & 1 & \\ \hline C & B & 10 & 3 & 2 & \\ \hline D & B & 15 & 8 & 6 & \\ \hline E & A,C & 10 & 6 & 4 & \\ \hline F & C & 11 & 10 & 3 & \\ \hline G & D, F & 7 & 5 & 3 & \\ \hline \end{tabular}