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Question 10 Incorrect {11.1110 points out of 4.01:] I? Flag question Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent retum for the Vanguard Total Stock Index (all Stocks). Let y be a random variable representing annual return for the Vanguard Balanced Index. (60% stock and 40% bond). For the past several years, assume the following data. Compute the coefcient of variation for each fund. Round your answers to the nearest tenth. x; 13 0 33 23 35 25 26 -13 -13 -16 y;7 '2 2616 241616 2 -3 -7 Select one: I a. for .t-values: 108.6%. and for y-values: 132.4% a b. for .r-valucs: 132.4.% and for__v-values: 194.1% 3: j c. for .r-vaiues: 194.1%. and fory-values: 132.4% I d. for .rvalucs: 194.1%. and fern-values: 236.3% J e. for .r-valucs: 108.6%). and tor_1.'va]1.1cs: 236.8%