By using the excel spreadsheet, compute the expected return and standard deviation of the returns on a portfolio that is invested in stocks A, B, and C? The total amount you invested in the portfolio is $150,000, where $33,500 of this amount of money is invested in stock A and $45,000 is invested in stock B, the rest were invested in stock C.

State of Economy	Probability of state of Economy	Return if state Occurs
		Stock A	Stock B	Stock C
Boom	20%	17%	6%	25%
Normal	45%	8%	10%	15%
Recession	???	1%	12%	-19%