Based on current dividend yields and expected capital gains, the expected rates of return on portfolios a and b are 12% and 16%, respectively. the beta of a is 0.7, while that of b is 1.4. the t-bill rate is currently 5%, whereas the expected rate of return of the s& p 500 index is 13%. the standard deviation of portfolio a is 12% annually, that of bis 31%, and that of the s& p 500 index is 18%.

a. calculate the alphas for the two portfolios. (round your answers to 1 decimal place.)

b. if you could invest only in t-bills and one of these portfolios, which would you chose?

What is the difference between total utility and marginal utility? a. marginal utility is subject to the law of diminishing marginal utility while total utility is not. b. total utility represents the consumer optimum while marginal utility gives the total utility per dollar spent on the last unit. c. total utility is the total amount of satisfaction derived from consuming a certain amount of a good while marginal utility is the additional satisfaction gained from consuming an additional unit of the good. d. marginal utility represents the consumer optimum while total utility gives the total utility per dollar spent on the last unit.