Tim Trepid is highly risk-averse while Mike Macho actually enjoys taking a risk. Investments Buy stocks Buy bonds Buy commodity futures Buy options Returns: Expected Value $ 9,470 7,560 20,400 18,888 Standard Deviation $ 6,120 2,850 26,100 16,600 57 a-1. Compute the coefficients of variation. (Round your answers to 3 decimal places.) Coefficient of Variation Buy stocks Buy bonds Buy commodity futures Buy options a-2. Which one of the following four investments should Tim choose? Buy bonds a-2. Which one of the following four investments should Tim choose? 340 O Buy bonds O Buy stocks O Buy commodity futures O Buy options b. Which one of the four investments should Mike choose? O Buy bonds O Buy stocks O Buy commodity futures Buy options