Problem 2 (35 points) Table below gives major activities to set up a Steam Injection plant for EOR operations in one section of the Ghawar oil field: a. Draw activity-on-arrow network b. Calculate the estimated completion time for the project and clearly show the Critical Path c. Calculate the probabilities that the project will be completed if the variance for activities along the critical path is 0.79 1. 2 months early 2. 1 month early 3. By the best estimate calculated in part (b) 4. By the end of 1 additional month 5. By the end of 2 additional months