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A new hotel project contains 6 tasks. The activities, their immediate predecessors, and the activity time estimates (in weeks) are presented in the following table. \begin{tabular}{|c|c|c|c|c|} \hline Activity & Predecessor & Optimistic & Most Probable & Pessimistic \\ \hline 1 & & 2 & 2 & 8 \\ \hline 2 & 1 & 2 & 4 & 6 \\ \hline 3 & 1 & 4 & 2 & 3 \\ \hline 4 & 1 & 1 & 3 & 4 \\ \hline 5 & 2,3,4 & 2 & 2 & 2 \\ \hline 6 & 2,5 & 2 & 6 & 8 \\ \hline \end{tabular} 6. What is the expected project completion time 12 14 13 15 7. What is the probability that this project will be finished in 1214 weeks 8.43% 41.57% 58.43% 91.57