Ameena is considering two securities, A and B with two different scenarios (black. and white), given the information below:

	Probability	Return on Security A (%)	Return on Security B (%)
Black	0.6	3.0%	6.5%
White	0.4	15.0%	6.5%

Suppose Ameena invested $2,500 in Security A and $3,500 in security B. Calculate the expected return of her portfolio.

Calculate the standard deviation of each security?