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Let Q(b) denote the right-tail probability of a standard Gaussian random variable. Suppose that X and Y are jointly-distributed Gaussian random variables with X N

Let Q(b) denote the right-tail probability of a standard Gaussian random variable. Suppose that X and Y are jointly-distributed Gaussian random variables with X N ( 18 , 10 ) and Y N ( 12 , 17 ). If the correlation coefficient between X and Y is 0.4, then P [Y > 0|X = 3] = Q(b), b is?

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