A firm's stock has 50% chance of a 10% rate of return and a 50% chance of a 19% rate of return. What is the standard deviation of return for this stock? Answer as a percent return to the nearest hundredth of a percent as in xx.xx without entering a percent symbol.

How much is the present value of an annuity of $3,000 dollars per year for 8 years, at an annual interest rate of 4.8 percent? Answer to the nearest cent (xxx.xx) and enter without the dollar sign.