Bond Portfolios Equations

Hello, For this project there is one problem that needs to be solved. You will have 2 days to complete for $15. In the attached is the file that needs to be solved. For this project you will need to have knowledge in statistics (variances, standard deviation) and also in calculating bond portfolios. NOTE: I will need all work shown for each equation you solve. For the problem here are the questions that must be answered. It is also attached in the file with the data: Consider the following information: State Probability X Z Boom .25 15% 10% Normal .60 10% 9% Recession .15 5% 10% 1) expected return of stocks X and Z 2) Standard deviation of stocks X and Z 3) Expected return of portfolio of X and Z with $4,000 invested in X and $6,000 invested in Z. 4) Standard deviation of portfolio of X and with $4,000 invested in X and $6,000 invested in Z. PLEASE KEEP IN MIND I NEED DETAILED CALCULATIONS!