The table below presents the returns on stocks ABC and XYZ for a five-year period.

a. Assume that the average returns from the data equals the expected returns for the respective stocks. If you want to form a portfolio with expected returns of 15%, what proportion of your assets would you invest in each of these stocks?

b. What is the standard deviation of this portfolio?

c. Suppose the risk-free rate is 5%. Compute the slope of the capital allocation lines for ABC and XYZ. Which of these two stocks yields a higher reward-to-risk ratio?

d. Your boss claims that you should invest only in the stock with the higher reward- to-risk ratio, and never invest in the stock with the lower reward-to-risk ratio. Do you agree? Explain.

\begin{tabular}{|c|c|c|} \hline Year & ABC & XYZ \\ \hline 1 & 0.35 & 0.13 \\ \hline 2 & 0.28 & 0.35 \\ \hline 3 & -0.07 & -0.12 \\ \hline 4 & -0.22 & -0.20 \\ \hline 5 & 0.48 & 0.52 \\ \hline \end{tabular}