Stocks A and B have the following probability distributions:

	% Returns
Probability	A	B
0.05	30	45
0.30	12	10
0.40	1	-15
0.25	-6	-30
a) Calculate the expected rate of return for each stock. b) Calculate the standard deviation for each stock. c) Calculate the coefficient of variation for each stock. d) If you form a 50-50 portfolio of the two stocks, calculate the expected rate of return, the standard deviation and the coefficient of variation for the portfolio. (Remember, you must calculate a new range of outcomes for the portfolio.)