Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for Vanguard Total Stock Index (all Stock). 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 sample mean for x and for y. Round your answer to the nearest tenth. x: 11 0 39 25 33 27 28 -11 -11 -25 y: 9 -2 29 14 26 16 14 -2 -3 -9 A) x=9.2 and y= 11.6 B) x= 166.0 and y= 10.4 C) x=41.5 and y=12.7 D) x=11.6 and y=9.2 E) x=69.0and Y9.6
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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. Compute . 12 0 39 23 31 25 26 -12 -12 -23 9 -3 26 15 24 17 15 -3 -4 -9 a. 133 b. 109 c. 132 d. 78 e. 155
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