Answer :
Answer:
The expected rates of return of stocks A and B:
E(RA) = 0.1*((13%) + 0.2*(12%) + 0.3*(14%) + 0.2*(15%)
E(RA) = 13.2%
E(RB) = 0.1*(8%) + 0.2*(7%) + 0.2*(6%) + 0.3*(9%) + 0.2*(8%)
E(RB) = 7.7%
The standard deviation of stocks A and B are:
Var(RA) = [0.1*(10%-13.2%)2^ + 0.2*(13%-13.2%)^2 + 0.2*(12%-13.2%)^2 + 0.3*(14%-13.2%)^2 + 0.2*(15%-13.2%)^2]^1/2
Var(RA) = 1.5%
Var(RB) = [0.1*(8%-7.7%)^2 + 0.2*(7%-7.7%)^2 + 0.2*(6%-7.7%)^2 + 0.3(9%-7.7%)^2 + 0.2*(8%-7.7%)^2]^1/2
Var(RB) = 1.1%