has interviewed knowledgeable engineers, technicians, and supply chain personnel regarding a fuel pump overhaul process development effort. The basic tasks, their technological precedence, and various duration estimates have been provided: Activity ID Activity Predecessors a - 3 B D E Design the process Select part providers Develop repair kit Train technicians Standup repair workstation (Duration time estimates are in weeks) a + 4m + b b-a m b 02 6 5 2 2 5 6 3 5 3 5 A B A BD 2 3 1 2 a. Using the "most likely" duration time estimates (m) as the activity durations, draw either the AOA or AON representation, then use the forward and backward passes to find the duration of the CP, the activities on the critical path, and the total slack for each activity. b. Using the CP identified from part a, but now using the expected values for the duration estimates and the associated variance estimates, calculate and identify on the standard normal pdf below the calculated z-value and shade the amount of probability associated with the project completing in less than 9 weeks. 43 2 -1 0 1 2