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Unformatted text preview: Problem 4 The joint density is To find the marginal of Y we integrate out X , being careful about the range of integration. When we fix Y = y , the range of X is . Problem 5 Everyone should know that the regression function asked for in the problem is . The easy way to find it is to use the formula without first calculating the conditional p. d. f. In this problem g ( x ) = x . So the numerator is Up: Stat 5131 Charles Geyer 11/14/1998...
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 Spring '02
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 Variance, Probability theory, Charles Geyer, parallel axis formula

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