Check my work 2 Use the following information on states of the economy and stock returns to calculate the standard deviation of returns. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) 10 points Probability of State of Economy .30 .45 .25 State of Economy Recession Normal Boom Security Return if State Occurs -8.50% 15.00 25.00 Skipped eBook Print Standard deviation % References