E(R1)=0.10E(2)=0.05E(R2)=0.15E(1)=0.03 Calculate the expected returns and expected standard deviations of a two-stock portfolio in which Stock 1 has a weight of 60 percent under the following conditions. a. r1,2=1.00 b. r1,2=0.75 c. r1,2=0.25 d. r1.2=0.00 e. r1,2=0.25 f. r12=0.75 g. r1,2=1.00