1.a) 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	0.1	-0.05
Normal	0.32	0.08
Boom	--	0.23

Enter return in percents, not in decimals.

1.b) 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	0.18	-0.12
Normal	0.31	0.06
Boom	--	0.18

Enter answer in percents, accurate to two decimal places.