Suppose there are three uncorrelated assets. Each has variance
1, and the mean values are 1, 2, and 3, respectively.
(a) Define the weights(w1, w2, w3) based on the portfolio rate
of return, r ̄.
(b) Define the standard deviation, σ, based on r ̄.
(c) What is the expected rate of return of a portfolio in the
efficient frontier when σ = 0.6?
(d) What are the values of r ̄ and σ for minimum-variance
point?
(please help me know how to solve this problem by hand
writing.)