Calculate the earliest expected completion time and note if the task is in a critical path.

\begin{tabular}{c|l|c|c} \hline Activity No. & Immediate Activity & Time (weeks) & Predecessors \\ \hline 1 & Collect requirements & 3 & \\ \hline 2 & Analyze processes & 2 & 1 \\ \hline 3 & Analyze data & 2 & 2 \\ \hline 4 & Design processes & 6 & 2 \\ \hline 5 & Design data & 3 & 3 \\ \hline 6 & Design screens & 4 & 3,4 \\ \hline 7 & Design reports & 5 & 4,5 \\ \hline 8 & Program & 5,9 \\ \hline 9 & Test and document & 4 & 7 \\ \hline \end{tabular}