For Commonwealth Bank
Beta (β) =1.11
Market return (Rm) = 7%
Risk-free return (Rf) = 3.25%
For Rio-Tinto
Beta (β) =0.95
Market return (Rm) = 7%
Risk-free return (Rf) = 3.25%
Calculate expected rate of return for both and also the construct a portfolio made up of 60% CBA and 40% RIO.
Based on your understanding of the CAPM and the SML, which of these asset(s) or portfolio(s) would you invest in and which would you not invest in. Explain your choice .