Answer:
a. Expected return of Intel stock
= Risk free rate + Beta * ( Market return - risk free rate)
= 5.6% + 1.69(12.2% - 5.6%)
= 16.75%
b. Expected return of Boeing stock
= Risk free rate + Beta * ( Market return - risk free rate)
= 5.6% + 0.88(12.2% - 5.6%)
= 11.40%
c. Beta of a Portfolio with 60% Intel stock and 40% Boeing stock.
= Weighted average of betas
= (0.6 * 1.69) + ( 0.4 * 0.88)
= 1.37
d. First method - Weighted average of both returns
= (0.6 * 16.75%) + (0.4 * 11.40%)
= 14.6%
Second method - Use the Portfolio beta and CAPM
= Risk free rate + Beta * ( Market return - risk free rate)
= 5.6% + 1.37(12.2% - 5.6%)
= 14.6%