Based on the following information calculate the expected return and standard deviation for the two stocks (show the calculation):

State of Economy	Probability of State occurring	Stock Y Return	Stock Z Return
Recession	0.15	-0.1	-0.02
Normal	0.70	0.15	0.1
Boom	0.15	0.28	0.15
a. E(R) Stock Y (13.20% is the answer) b. Standard deviation of Stock Y return (10.76% is the answer)
c. E(R) Stock Z (8.95% is the answer) d. Standard deviation of Stock Z return (4.92% is the answer)