Need full explanation and Calculation. Below excel file is fir reference. Thank you

4. The following presents the performance of stock and bond funds under various scenarios. The T-bill rate is 4% Scenario Probability Rate of retum of Rate of retum of a. Calculate the expected returns of the stock and bond funds. ( 2 marks) b. Calculate the standard deviations of the stock and bond funds. (2 marks) c. Calculate the correlation coefficient of the stock and bond funds. ( 3 marks) \begin{tabular}{l|l|l|} \hline Q4 & & \\ \hline Scenario & Probability rate of return of stock fund & rate of return of bond fund \\ \hline \end{tabular}