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 10%, the probability of a stable growth economy is 15%, the probability of a stagnant economy is 50%, and the probability of a recession is 25%. Use the table below to compute the following three questions:

Estimate the expected returns on stock in percentage for the coming year.

INVESTMENT	Forecasted Returns for Each Economy
	Boom	Stable Growth	Stagnant	Recession
Stock	25%	12%	4%	-12%
Corporate Bond	9%	7%	5%	3%
Government Bond	8%	6%	4%	2%

1- Using the data from the previous problem, calculate the standard deviation of stock, in percentage.

2-

Using the data from the previous problem, calculate the standard deviation of corporate bond, in percentage

3-

Using the data from the previous problem, calculate the standard deviation of Government bond, in percentage.