Answer:
SO expected return on Mkt Portfolio Rm = 10.75%
Explanation:
market degree of risk aversion A = 3
Var = 0.0225 = SD^2
Rf = 4%
What is expected return on Mkt Portfolio ie Rm??
According to CAPM, Rm-Rf = A*SD^2
where SD is Std Dev (Recall SD^2 = Variance)
A is market degree of risk aversion
So we have Rm-4% = 3*0.0225
ie Rm = 4% + 3*0.0225 = 10.75%
SO expected return on Mkt Portfolio Rm = 10.75%