It is 1 January 1997. Normal America, Inc. (NA) has paid a year-end dividend in each of the last 10 years, as shown by the table below:
FIGURE CANT COPY
a. Calculate NA's $\beta$ with respect to the $S \& P 500$.
b. Suppose that the Treasury bill rate is $5.5 \%$ and that the expected return on the market is $E\left(r_M\right)=13 \%$. If the corporate tax rate $T_C=35 \%$, calculate NA's cost of equity using both the classic CAPM and tax-adjusted model.
c. Assume that NA's cost of debt is $8 \%$. If the company is financed by $1 / 3$ equity and $2 / 3$ debt, what is its weighted average cost of capital using each of the two CAPM models?