Estimate Walmart's approximate WACC; use the most recent year's debt ratio to find the weights of debt and equity. If Walmart issues preferred stock, for simplicity's sake, ignore it. The cost of debt will be the approximate YTM calculated in Week 5. Use CAPM to calculate Walmart's required rate of return on the stock. The beta was determined in Week 6 (0.40); use the current 10-year Treasury bonds' YTM as the risk-free rate. Using a reliable source, research the current market's expected rate of return (for example, the S&P 500). Be sure to mention all the reference sources.