The following information is avallable conceming the historical risk and return relationships in the U.S. capital markets: II. C. CPTTAI MARKFTS TOTAI ANNIIAI RFTURNS. 1990-2015 a. Explain why the geometric and arithmetic mean retums are not equal and whether one or the other may be more useful for investment decision making. The arithmetic average assumes , while the geometric average assumes decimal places. Qovernment bonds. Do not round intermediate calculations. Round your answers to two decimal places. Use a minus sign to enter negative values, if any. Arithmetic: from % to is