D Question 11 4 pts Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return 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. 12 0 36 21 33 23 24 -12 -12 -21 7 -5 28 15 22 16 15 -5 -6 -7 V: The sample means for x and y are 10.40 and 8.00, respectively. Compute the coefficient of variation for each fund. Round your answers to the nearest tenth. for x-values: 124.9%, and for y-values: 162.4% for x-values: 192.7%, and for y-values: 250.5% for x-values: 162.4%, and for y-values: 192.7% for x-values: 124.9%, and for y-values: 250.5% for x-values: 192.7%, and for y-values: 162.4%