Immediate Timelweeks) Activity predecessor(s) Optimistic Most Likely Pessimistic A 1 2. 3 B -- 2 4 12 -- 1 N 3 D B 6 7 8 E B,C 4 5 6 6 F D 2 3 4 G EF 1 15 5 5 H 2 5 14 Using Table 7.2, what is the probability of completing this project in 21 weeks? greater than 80% greater than 60% but less than or equal to 70% less than or equal to 60% greater than 70% but less than or equal to 80% Using Table 7.2, by what time can we complete the project with the probability of 95%? greater than 27 weeks greater than 21 weeks or equal to 24 weeks less than or equal to 21 weeks greater than 24 weeks or equal to 27 weeks 34 Using Table 7.2, if the expected times for activities A, C, and H increased by 3, 3, and 4 weeks, respectively, by how many weeks would the project's earliest expected time of completion increas greater than 6 weeks greater than 2 weeks but fewer than or equal to 4 weeks greater than 4 weeks but fewer than or equal to 6 weeks no change