It would be a pleasure if u provide the answers & and how to solve only in EXCEL!

8. Using the information below, compute the portfolio standard deviation. Do this using the blanks below in yellow. \begin{tabular}{|ccccc} \hline asset & mean & standard deviation & covariance & weight \\ \hline A & 5.00% & 2.50% & 0.006250 & 80% \\ B & 10.00% & 15.00% & & 20% \\ \hline \end{tabular} portfolio variance portfolio standard deviation Using the computation tool that is set up in \# 8, change the portfolio weights as in the table below and record the resulting portfolio standard deviation in the table below as well. Also compute the portfolio mean return, which is the weighted average of the indiviual assets' mean returns, and record it in the table below. Using the portfolio mean returns and the portfolio standard deviations in the table in \#9, creat a graph showing the investment opportunity set. Also, specify what is the x-axis and what is the y-axis (below in yellow blank). x-axis y-axis investmetn opportunity set here