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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

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 a 75% Chebyshev interval around the mean for x-values and also for y-values. Round your answers to the nearest hundredth.

x: 11 0 38 21 34 23 24

-11

-11

-21

y; 7

-4

27 14 22 18 14

-4

-5

-7

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for x-values: -30.20 to 23.32 and for y-values: -16.84 to 20.72

for x-values: -30.20 to 23.32 and for y-values: -4.32 to -14.24

for x-values: -9.70 to 51.80 and for y-values: -4.32 to 33.24

for x-values: -30.20 to 51.80 and for y-values: -16.84 to 33.24

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