The random variables X and Y in Exercise 2, with variances found in Section 7.2, Exercise 10.
Question:
For the following joint distributions, find the probabilities for the random variable X - Y (the difference), and check that E(X - Y) = E(X) - E(Y) and that Var(X - Y) = Var(X) + Var(Y) if Cov(X, Y) = 0.
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Y=1 0.45 0.25 r=3 0.05 0.25
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Related Book For
Modeling the Dynamics of Life Calculus and Probability for Life Scientists
ISBN: 978-0840064189
3rd edition
Authors: Frederick R. Adler
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