Consider the following Activity-On-Node (AON) PERT project. The three values that represent each activity's completion time (in days) correspond to an optimistic time, most likely time, and pessimistic time, respectively. 4-5-6 2-3-4 B D 4-5-6 3-4-5 F 5-6-7 3-4-5 E Refer to the figure. What is the probability of not completing the project within 18 days? 0.0668 0.4332 O 0.9332 0.4878 Consider the following Activity-On-Node (AON) project (activity completion times are in days). B D A 3 E Refer to the figure. Suppose that additional resources are provided to crash the project completion time below its expected normal completion time. Which activities would be potential candidates for crashing? 4 OB OD O A and B O A and D. C Consider the following Activity-On-Node (AON) PERT project. The three values that represent each activity's completion time (in days) correspond to an optimistic time, most likely time, and pessimistic time, respectively. 4-5-6 2-3-4 B D 4-5-6 3-4-5 F 5-6-7 3-4-5 E Refer to the figure. What is the expected completion time of the critical path? 16 days 4 O 17 days O 18 days O 19 days O 20 days 3+1