4. A portfolio consists of stock Q and stock R. The portfolio is invested 52 percent in stock Q and 48 percent in stock R. Given the information below, answer the following questions: Probability of State of Economy Returns if State Occurs State of Stock Q Stock R Economy 14% 16% oom 10% Normal 90% 8% 11% (1) What are the expected returns and standard deviations for stock Q and Stock R? (2) What are the expected return and standard deviation for the portfolio