Q1/Calculate the expected return for a stock, given the following information about its returns in different states of the economy.

State of economy	Probability	Stock return
Recession	0.16	-0.15
Normal	0.43	0.07
Boom	--	0.25

Enter return in percents, not in decimals.

Q2/Given the following information about the returns of stocks A, B, and C, what is the expected return of a portfolio invested 30% in stock A, 40% in stock B, and 30% in stock C?

State of economy	Probability	Stock A	Stock B	Stock C
Boom	0.19	0.37	0.26	0.35
Good	0.22	0.23	0.15	0.27
Poor	0.2	0.09	0.04	0.02
Bust	--	-0.17	-0.14	-0.25

Enter answer in percents.

Q3/

Given the following information about a stock's return in the various states of the economy, calculate the standard deviation of its return.

State of economy	Probability	Stock return
Recession	0.16	-0.27
Normal	0.49	0.04
Boom	--	0.24

Enter answer in percents, accurate to two decimal places.