Let X 1, . .. , X n be iid random variables 'vith expected
Chapter 8, Problem 8.26(choose chapter or problem)
Let X 1, . .. , X n be iid random variables 'vith expected value 0, variance 1, and covariance Cov[Xi, Xj] = p, for i =f. j. u se Theorem 8.8 to find the expected value and variance of the sum Y = X 1 + + Xn.
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