Tim Trepid is highly risk-averse while Mike Macho actually enjoys taking a risk. Returns: Expected Value Investments Buy stocks Buy bonds Buy commodity futures Buy options a-1. Compute the coefficients of variation. Note: Round your answers to 3 decimal places. Buy stocks Buy bonds Buy commodity futures Buy options $ 8,970 7,410 22,700 13,100 Coefficient of Variation O Buy bonds Buy stocks O Buy commodity futures O Buy options Standard Deviation a-2. Which one of the following four Investments should Tim choose? O Buy bonds O Buy stocks O Buy commodity futures O Buy options $ 6,270 2,480 30,900 14,700 b. Which one of the four Investments should Mike choose? 2