Expected returns

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

Probability	X	Y
0.1	-11%	-37%
0.2	5	0
0.3	11	18
0.3	23	28
0.1	32	39

1. Calculate the expected rate of return, r_Y, for Stock Y (r_X= 13.30%.) Round your answer to two decimal places.%
2. Calculate the standard deviation of expected returns, _X, for Stock X (_Y= 20.63%.) Round your answer to two decimal places.%
3. Now calculate the coefficient of variation for Stock Y. Round your answer to two decimal places.