Suppose that the S&P 500, with a beta of 1.0, has an expected return of 15% and T-bills provide a risk-free return of 6% a. What would be the expected return and beta of portfolios constructed from these two assets with weights in the S&P 500 of (i) 0; ii) 0.25; (ii) 0.50; (iv) 0.75; (v) 1.0? (Leave no cells blank be certain to enter "O" wherever required. Do not round intermediate calculations. Round your answers to 2 decimal places.) Answer is complete and correct. Expected Return Beta (ii) 0.25 (ii) 0.50 (iv) 0.75 6.000% 10.000 8.25 % | 0.25 | 10.50 | % | 0.50 12.75 |% | 0.75 15.00 |% | 1.000 b. How does expected return vary with beta? (Do not round intermediate calculations.) Answer is complete but not entirely correct. The expected return % for a one unit increase in beta increases by