Stocks X and Y have the following probability distributions of expected future returns:

Probability	X	Y
0.1	-10%	-25%
0.3	6	0
0.3	13	24
0.2	21	29
0.1	37	47

a.) Calculate the expected rate of return, rY, for Stock Y (rX = 12.60%.) Round your answer to two decimal places.

b.) Calculate the standard deviation of expected returns, ?X, for Stock X (?Y = 19.83%.) Round your answer to two decimal places.

c.) Now calculate the coefficient of variation for Stock Y. Round your answer to two decimal places.