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 15%, the probability of a stable growth economy is 16%, the probability of a stagnant economy is 54%, and the probability of a recession is 15%. Calculate the variance and the standard deviation stock? Investment Boom Forecasted Returns for Each Economy Stable Stagnant Growth 12% 5% 8% 5% 7% 4% 26% Stock Corporate bond Government bond Recession - 14% 4% 3% 9% 8% 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.)