This is the given information from exercise 2

Use the same information from exercise 2. Solve for the portfolio weights which maximize the ratio of the expected excess return to the standard deviation of the portfolio return. Mars - 1) You need to add a risk-free rate of 4%. What is the minimum standard deviation and what is the expected return? Using this information find the risk minimizing portfolio with a target return of 14.2% and then find the expected return - maximizing portfolio with a risk tolerance of 13%. Let E, be the expected return on the four securities and E, be your portfolio target return. The weight for the targer return of 14.2% is given by: Ws E,- W, = sp The weight for the standard deviation is: Exercise 2. You are given a four security portfolio: Security 4 Expected Return 0.06 0.09 1 2 3 0.10 0.12 0.17 0.14 0.18 0.22 SD Correlations: 1 1 2 3 4 0.300.350.40 1 0.10 0.40 1 0.35 You have a target rate of return of 14.2%. Solve for the portfolio weights which minimize the portfolio standard deviation and achieves the target return. In this exercise the weights can be negative. What is the minimum standard deviation and what is the expected return? Use the same information from exercise 2. Solve for the portfolio weights which maximize the ratio of the expected excess return to the standard deviation of the portfolio return. Mars - 1) You need to add a risk-free rate of 4%. What is the minimum standard deviation and what is the expected return? Using this information find the risk minimizing portfolio with a target return of 14.2% and then find the expected return - maximizing portfolio with a risk tolerance of 13%. Let E, be the expected return on the four securities and E, be your portfolio target return. The weight for the targer return of 14.2% is given by: Ws E,- W, = sp The weight for the standard deviation is: Exercise 2. You are given a four security portfolio: Security 4 Expected Return 0.06 0.09 1 2 3 0.10 0.12 0.17 0.14 0.18 0.22 SD Correlations: 1 1 2 3 4 0.300.350.40 1 0.10 0.40 1 0.35 You have a target rate of return of 14.2%. Solve for the portfolio weights which minimize the portfolio standard deviation and achieves the target return. In this exercise the weights can be negative. What is the minimum standard deviation and what is the expected return