1. Over the past 4-years, MNOP Corporation stock has generated the following returns: 4 years ago, 12%; 3-years ago,-2%; 2-years ago 16% and last year,-5%, what is the mean expected return for ZYX and what is its standard deviation over this period? what is the weighted average cost of capital of a firm that uses 25% debt financing, 70% equity financing, and the remainder is preferred financing? The firm has a 21% tax rate and the cost of equity is 18%, the cost of preferred is 9.25%, and the cost of debt is 2, What is the investor's required rate of return on a security, QRST, when the firm's beta is 2.2, the current rate of US Treasury Bills is 0295, and the S&P 500 last year returned 22%? 3