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Let (X1, Y1), . . . ,(Xn, Yn), be a random sample from a bivariate normal...

Let (X1, Y1), . . . ,(Xn, Yn), be a random sample from a bivariate normal distribution with parameters µ1, µ2, σ2 1 , σ2 2 , ρ. (Note: (X1, Y1), . . . ,(Xn, Yn) are independent). What is the joint distribution of (X ¯ , Y¯ )?

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