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

PROB.	X	Y
0.1	-14%	-27%
0.2	6%	0%
0.3	14%	20%
0.2	21%	27%
0.2	37%	47%

a. Calculate the expected rate of return, rY, for Stock Y (rX = 15.60%.)

b. Calculate the standard deviation of expected returns, X, for Stock X (Y = 21.28%.)

c. Now calculate the coefficient of variation for Stock Y