Listed in the below table are the tasks and times for a productdevelopment project.Expected time in weeks, variance of the expected time in squareweeks, and probability that this project is comple \begin{tabular}{|l|l|l|l|l|} \hline Activity & \( \begin{array}{l}\text { Predecessor } \\ \text { activities }\end{array} \) & \( \begin{array}{l}\text { Optimistic time, } \\ \text { weeks }\end{arr 2 answers