The stock market data is given in the following table. Correlation Coefficients Telmex Telmex Mexico World 1.00 Mexico World SD (%) R (%) 1.50 1.00 18 ? 1.00 1.20 15 14 1.00 10 12 The above table provides the correlations among Telmex, a telephone or communication company located in Mexico, the Mexico stock market index, and the world market index, together with the standard deviations (SD) of returns and the expected returns (R). The risk-free rate is 7%. Required: Suppose the Mexican stock market is segmented from the rest of the world. Using the CAPM paradigm, estimate the equity cost of capital of Telmex. Note: Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Equity cost %

Stock indexes are used to compare the price fluctuations of a group of stocks of similar companies, which are combined based on a similar industry or a particular market capitalization limit or type of market. The price comparison is based on a pre-deter…