4.to achieve diversification, john invests in apple and walmart. what

1. To achieve diversification, John invests in APPLE and WALMART. What are the weights on the two stocks to achieve the optimal risky portfolio? What are the mean and standard deviation of returns on his optimal risky portfolio? Must show your calculation by including the formulas you used.

2. Mary instead invests in APPLE and GOLDMAN SACHS. What are the weights on the two stocks to achieve the optimal risky portfolio? What are the mean and standard deviation of returns on her optimal risky portfolio? Must show your calculation by including the formulas you used.

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