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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Question

Suppose X and Y are independent random variables. Y
a. What is the correlation coefficient of X and X – Y? Your answer will be in terms of var(X)
and υar (Y).
b. What is the conditional expectations of E[(X –Y)|X] and E[(X – Y)²|X]? You answer could
be in terms of X,Y, E(X), E(X²), E(Y), and E(Y²).

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