show excel formulas in calculations and =formulatext or explain

You are considering two assets with the following characteristics. E(R1)=0.15E(R2)=0.20E(1)=0.10E(2)=0.20w1=0.5w2=0.5 Calculate the mean and standard deviation of two portfolios if r1,2=0.40 and 0.60, respectively. Plot the two portfolios on a risk-return graph and briefly explain the results. You are considering two assets with the following characteristics. E(R1)=0.15E(R2)=0.20E(1)=0.10E(2)=0.20w1=0.5w2=0.5 Calculate the mean and standard deviation of two portfolios if r1,2=0.40 and 0.60, respectively. Plot the two portfolios on a risk-return graph and briefly explain the results