Refer the table below on the average excess return of the U,S. equity market and the standard deviation of that excess refum. Suppose that the US, market is your risky portfolio. a. If your risk-aversion coetficient is A=4 and you believe that the entire 19272018 period is representative of future expected performance, what fraction of your portfolio should be allocated to T-bills and what fraction to equity? Assume your utaity function is is =x=10.5k02. (Do not round intermediate calculations. Round your answers to 2 decimol places.) b. If your risk-iversion coetficient is A=4 and you besieve that the entire 1973-1995 period is reptesentative of futhe expected