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 define probabilities of finishing by a certain time?

The project value of completion time is:

(enter your response as a whole number).

A small software development project at Krishna Dhir's firm has five major activities. Tho times are estimated and provided in the table below. \begin{tabular}{ccccc} \hline ACTIVITY & IMMEDIATE PREDECESSOR & a & m & b \\ \hline A & & 1 & 4 & 7 \\ B & & 4 & 10 & 16 \\ C & A & 6 & 9 & 12 \\ D & B & 2 & 5 & 8 \\ E & C & 3 & 3 & 3 \\ \hline \end{tabular}