Problems: Show your work clearly for full or partial credit. Upload the Excel file on MOLE in the folder titled "Exam 3 File Upload". Consider the following states of outcomes, probabilities, and expected returns on only stocks three stocks in your portfolio: X. Y. and Z. State Probability Y Z Boom 0.1 16% 1096 72 149 8% 18% 0.45 10% 14% Semi-Boom Normal Semi-Normal Mild-Recession 0.10 8% 12.5% 0.05 596 394 -10% Full-Recession 0.05 -3% 2% - 129 What is the expected return of the portfolio if S25,000 is invested in X, 535,000 in Y. and 30,000 invested in stock Z? b. What are the standard deviations of stocks X. Y. and Z? Time lot for this