1. Using the normal distribution of each activity, how long does it take to complete this project?
2. What is the confidence interval that this project will be completed in 22 days?

Would you be able to explain how to do this in Excel?

\begin{tabular}{|c|c|c|} \hline Activity Label & Predecessor Activity(s) & Time in days () \\ \hline A & - & 4(1) \\ \hline B & A & 3(0.5) \\ \hline C & A & 5(1.5) \\ \hline D & B & 6(1) \\ \hline E & C & 4(0.7) \\ \hline F & D, E & 2(0.3) \\ \hline \end{tabular}