The following information is available concerning the historical risk and return relationships in the U.S. capital markets: U.S. CAPITAL MARKFTS TOTAI ANNIAL RFTIRNE. 10003015 a. Explain why the geometric and arithmetic mean returns are not equal and whether one or the cther may be more useful for investment decision making. The arthmetic average assumes while the geometric average assumes b. For the time period indicated, rank these investments on a relative basis using the Joeffient of variation from most to least desirable. Do not round intermediate calculations. Round your answers to two decimal places. c. Assume the arithmetic mean returns in these series are normaly distributed. Calculate the range of returns that an investor would have expected to achieve 95 percent of the time from holding common stocks. Do not round intermediate caloulations. Aound your answers to two decimal places. Use a minus sign to enter negative values. if any. Arahmetic: from % to