e$.96$

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 stock and

$40\%$ bond$).$ For the past several years, assume the following data. Compute $x^2.$

a$.5311$

b$.4879$

c$.5023$

d$.5599$

e$.4510$