a b A B A small software development project at Krishna Dhir's firm has five major activities. The times are estimated and provided in the table below. IMMEDIATE ACTIVITY PREDECESSOR 2 4 3 D 2 E 4 a) Find the expected completion time for this project. The expected completion time for this project is (enter your rosponse as a whole number). b) What variance value would be used to find probabilities of finishing by a certain time? The project variance value of completion time is (enter your response as a whole number). m 5 7 6 5 4 A 8 10 15 14 4