please help with this problem, thank you!

You may need to use the appropriate technology to answer this question. Consider the PERT/CPM network with estimated times in weeks shown in the following figure. The project is scheduled to begin on May 1. The three-time estimate approach was used to calculate the expected times and the following table gives the variance for each activity. The three-time estimate approach was used to caiculate the expected times and the following table gives the variance for each activity. \begin{tabular}{|c|c|} \hline Activity & Variance \\ \hline A & 1.0 \\ \hline B & 0.6 \\ \hline C & 1.1 \\ \hline D & 0.7 \\ \hline E & 0.2 \\ \hline F & 0.7 \\ \hline G & 0.5 \\ \hline H & 1.1 \\ \hline \end{tabular} (a) Give the expected project completion date and the critical path. (Enter your critical path as a comma-separated list.) The expected project completion is weeks from May 1 with a critical path of (b) Based only on the critical path, by what date are you 99% sure the project wal be completed? (Round your answer to one decimal place.) weeks from May 1