Use the following table of States of the Economy and Stock Returns to answer the following questions.

State of Economy	Probability of state of economy	Security Returns is State Occurs: A	B
Recession	.25	-15%	10%
Average	.5	12%	5%
Prosperity	.25	30%	15%
	1

Calculate the Expected Return for A & B.

Calculate the Standard Deviation for A & B.

Calculate the expected Return on a portfolio of 50% Security A & 50% Security B.

Calculate the Standard Deviation for the Portfolio A & B.