1. You own a portfolio invested 14.88% in Stock A, 15.22% in Stock B, 13.64% in Stock C, and the remainder in Stock D. The beta of these four stocks are 0.75, 0.64, 0.37, and 1.37. What is the portfolio beta?
2. A portfolio is invested 37.4% in Stock A, 12.4% in Stock B, and the remainder in Stock C. The expected returns are 14.5%, 34.1%, and 24.2% respectively. What is the portfolio's expected returns?