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

Group of answer choices

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