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Section 4.4 Suppose X and Y are two random variables such that (1) (2) (3)

Section 4.4 Suppose X and Y are two random variables such that (1) (2) (3). E( Y | X = x ) is a linear function of x ,. Var( Y | X = x ) is a constant for each x. Y | X = x has a normal distribution for any real number x. Then we know that (1) (2).

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