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 PREDECESSOR a m b ACTIVITY A B с D 5 4 4 8 7 А B с 13 11 16 14 4 8 2 4 E 4 a) Find the expected completion time for this project. The expected completion time for this project is (enter your response 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).