40 days or less? PX ... 3.20 The estimated times and immediate predecessors for the activities in a project at George Kyparis's retinal scanning company are given in the following table. Assume that the activity times are independent. ACTIVITY A B C D IMMEDIATE PREDECESSOR B Andrew Bassett/Shutterstock to 9 9 5 TIME (WEEKS) E 10 10 10 8 b 16 11 a. Calculate the expected time and variance for each activity. b. What is the expected completion time of the critical path? What is the expected completion time of the other path in the network? c. What is the variance of the critical path? What is the variance of the other path in the network?

40 days or less? PX 3.20 The estimated times and immediate predecessors for the activities in a project at George Kyparis's retinal scanning company are given in the following table. Assume that the activity times are independent. Andrew Bassett/Shutterstock a. Calculate the expected time and variance for each activity. b. What is the expected completion time of the critical path? What is the expected completion time of the other path in the network? c. What is the variance of the critical path? What is the variance of the other path in the network