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 ACTIVITY A B 1 NNNNN b B 19 19 8 2 5 13 13 5 2 A B moo D E 7 2 2 a) Find the expected completion time for this project The expected completion time for this project is center 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)