From the last problem, the following three economic states, their likelihoods, and potential returns are shown. The expected return was 4.95%. Determine the standard deviation of the expected return

	Probability	Return
Fast Growth	0.25	35%
Slow Growth	0.40	0.40
Recession	0.35	-20%

a. 21.2%

b. 17.6%

c. 4.95%

d. 447.3%