A small software development project at Krishna Dhir's firm has five major activities. The times are estimated and provided in the table below. \begin{tabular}{ccccc} \hline IMMEDIATE & & & \\ ACTIVITY & PREDECESSOR & a & m & b \\ \hline A & & 2 & 5 & 8 \\ B & & 4 & 7 & 10 \\ C & A & 4 & 7 & 10 \\ D & B & 2 & 8 & 14 \\ E & C & 4 & 4 & 4 \\ \hline \end{tabular} 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)