help me as soon as you can

I will rate the thumps up

1. The following are possible states of the economy and the returns associated with stocks A and B in those states. Return on Return on A B State Probability Good 0.3 22% 35% Normal 0.4 36% 19% Bad 0.3 48% -8% Calculate the expected return and the standard deviation of a portfolio comprised of stocks A and B. The weight in stock A is 57%