Gretahas risk aversion of A=5 when applied to return on wealth over a one-year horizon. She is pondering two portiolios, the 5&P premium is estimated at 10% per year, with a standard deviation of 16%. The hedge fund risk premium is estimated at 12% with a standard deviation of 31%. The returns on both of these portfolios in any particular year are uncorrelated with its own returns in other years. They are also uncorrelated with the returns of the other portfolio in other years. The hedge fund claims the correlation coefficient between the annual return on the 5&P500 and the hedge fund return in the same year is zero, but Greta is not fully convinced by this claim. a-1. Assuming the correlation between the annual returns on the two portfolios is indeed zero, what would be the optimal asset allocation? (Do not round intermediate calculations. Enter your answers as decimals rounded to 4 places.) a-2. What is the expected risk premium on the portfolio? (Do not round intermediate calculations. Enter your answer as decimals rounded to 4 places.)