Consider the following data for a project

What is the expected time that project will be completed?

What are the activities on the critical path?

What would happen if F now took 4 days

\begin{tabular}{|l|c|c|c|c|c|c|c|c|c|} \hline Activity & A & B & C & D & E & F & G & H & I \\ \hline Immediate Predecessor & - & A & A & A & B & C,D & E,F & D & G,H \\ \hline Expected Time & 1 & 4 & 3 & 7 & 6 & 2 & 7 & 9 & 4 \\ \hline \end{tabular}