Consider historical data showing that the average annual rate of return on the S&P 500 portfolio over the past 85 years han averaged roughly 8% more than the Treasury bill return and that the S&P 500 standard deviation has been about 33% per year Assume these values are representative of investors' expectations for future performance and that the current T-bill rate is 3% Calculate the utility levels of each portfolio for an investor with A-3. Assume the utility function is ) - Ad (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 4 decimal places.) U(A-3) WBills 0.0 Windex 1.0 0.8 02 0.4 0.6 0.4 0.2 0.6 0.8 10 0 0.0