2) Consider the PERT data shown in the network below and answer the following questions: a) Calculate the ES, EF, Standard Deviation (SD), Variance (V) and the Duration of the activities an complete the network diagram. b) If the contract for a project is 120 days, what is the chance (in percent) of mecting the schedule? c) Assume the owner delays the job start by 5 days. What is the probability (in percent) that the project will still finish at the originally scheduled completion date? Activity ES 3-Time Est. EF SD Duration v Activity B 28/40/82 Activity D 34/46/100 Activity F 16/25/64 Activity A 0/0/0 Activity G 0/0/0 Activity C 55/71/141 Activity E 22/28/58