If you want to increase your purchasing power by investing in a bond, then: a. you must purchase that bond at a discount.
b. the nominal rate of return on that bond must be less than the inflation rate.
c. you should purchase a premium bond.
d. the nominal rate of return must equal or exceed the rate of inflation.
e. you must earn a positive real rate of return on that bond.

Consider the following information on stocks a, b, c and their returns (in decimals) in each state: state prob. of state a b c boom 20% 0.27 0.22 0.16 good 45% 0.16 0.09 0.07 poor 25% 0.03 0 0.03 bust 10% -0.08 -0.04 -0.02 if your portfolio is invested 25% in a, 40% in b, and 35% in c, what is the standard deviation of the portfolio in percent? answer to two decimals, carry intermediate calcs. to at least four decimals.