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Let X and Y have the joint normal distribution described in equation (4.16). What value of a
minimizes the variance of Z = aX + (1 - a)Y? Simplify your result when X and Y are
independent.
Solution
we need the description from 4.16

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Let X and Y have the joint normal distribution described in equation.pdf

  • 1. Let X and Y have the joint normal distribution described in equation (4.16). What value of a minimizes the variance of Z = aX + (1 - a)Y? Simplify your result when X and Y are independent. Solution we need the description from 4.16