Variance and standard deviation (expected). Hull Consultants, a famous think tank in the Midwest, has provided probability estimates for the four potential economic states for the coming year. The probability of a boom economy is 13%, the probability of a stable growth economy is 16%, the probability of a stagnant economy is 51%, and the probability of a recession is 20%. Calculate the variance and the standard deviation stock? Forecasted Returns for Each Economy Investment Boom Stable Growth Stagnant Recession Stock 30% 1 1% 6% - 15% Corporate bond 10% 7% 5% 3% Government bond 9% 6% 4% 2% What is the variance of the stock investment? % (Round to five decimal places.) What is the standard deviation of the stock investment? % (Round to two decimal places.)