Listed in the below table are the tasks and times for a product development project.

Expected time in weeks, variance of the expected time in square weeks, and probability that this project is completed in a year are.

\begin{tabular}{|l|l|l|l|l|} \hline Activity & Predecessoractivities & Optimistictime,weeks & Mostlikelytime,weeks & Pessimistictime,weeks \\ \hline A & - & 10 & 12 & 14 \\ \hline B & - & 12 & 21 & 36 \\ \hline C & A & 12 & 13.5 & 18 \\ \hline D & B & 16 & 24 & 38 \\ \hline E & C & 12 & 18 & 10 \\ \hline Finish & E & 2 & 6 & \\ \hline \end{tabular}