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Check my work Consider historical data showing that the average annual rate of return on the S&P 500 portfolio over the past 85 years has averaged roughly 8% more than the Treasury bill return and that the S&P 500 standard deviation has been about 30% per year. Assume these values are representative of investors' expectations for future performance and that the current T-bill rate is 5%. 0.06 points Calculate the utility levels of each portfolio for an investor with A= 3. Assume the utility function is U= E(1) - 0.5 Ao2. (Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 4 decimal places.) eBook Print Windex U(A = 3) References 1.0 WBills 0.0 0.2 0.4 0.8 0.6 0.4 1.0 0.0