Tim Trepid is highly risk-averse while Mike Macho actually enjoys taking a risk. Returns: Expected Investments Value Standard. Deviation Buy stocks $ 9,140 $ 6,300 Buy bonds 7,940 2,500 Buy commodity futures 21,600 26,000 Buy options 13,700 19,700 a-1. Compute the coefficients of variation. Note: Round your answers to 3 decimal places. Buy stocks Buy bonds Buy commodity futures Buy options Coefficient of Variation bok nt nt ences a-2. Which one of the following four investments should Tim choose? O Buy bonds Buy stocks Buy commodity futures Buy options b. Which one of the four investments should Mike choose? Buy bonds Buy stocks Buy options Buy commodity futures