PERT The activity table below is for a manufacturing company. The company needs to determine the critical path, project completion time, variance of the completion time of the project, and the probabilities of completing the project in 24 or 26 days. Complete the Excel spreadsheet and discuss your results in a recommendation. Activity Immediate Predecessors Optimistic Time Most Probable Time Pessimistic Time A None 1 3 6 B A 2 6 10 C A 4 6 12 D C 6 9 15 E C 7 9 16 F B, D, E 3 6 10 (10 points) Total: 20 points Besides the explanation, examples and solved problems in the chapter, please look also at the video below the Power Point document of Chapter 18, it explains the methods step by step.