Answer:
The correct answer is: b)
Step 1. Find Portfolio Beta
Beta of the Portfolio
=
(.25)(.5)+(.25)(2)+(.25)(1)+(.25)(0)
= 0.125
+ 0.5 + 0.25 + 0
= 0.875
Step
2. Find E(R)
E(R) = Rf + B(Rm - Rf)
= 3% + (0.875)(5%)
= 7.38%
Note that the market risk premium is the difference
between the expected market return on a market portfolio,
and the risk-free rate. In this case, we were given
the market risk premium, so further calculation was
not needed.
2005 CFA Level 1 LOS: 12.1.D.h