12. Using the data in the previous problem, calculate the first-period rates of return on the following indexes of the three stocks: a. A market-value-weighted index. b. An equally weighted index. 13. An investor is in a 30% tax bracket. If corporate bonds offer 9% yields, what must municipals offer for the investor to prefer them to corporate bonds? 14. Find the equivalent taxable yield of a short-term municipal bond currently offering yields of 4% for tax brackets of zero, 10%, 20%, and 30%. 15. What problems would confront a mutual fund trying to create an index fund tied to an equally weighted index of a broad stock market? 16. Which security should sell at a greater price? a. A 10-year Treasury bond with a 9% coupon rate versus a 10-year T-bond with a 10% coupon. b. A 3-month expiration call option with an exercise price of $40 versus a 3-month call on the same stock with an exercise price of $35. c. A put option on a stock selling at $50, or a put option on another stock selling at $60 (all other relevant features of the stocks and options may be assumed to be identical)