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: State of Economy Boom Normal Probability of State of Economy 10% 90% Returns if State Occurs Stock Stock R 14% 16% 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