Let x and y denote the seat numbers of the first and

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Unformatted text preview: Let X and Y denote the seat numbers of the first and second individuals, respectively. Possible (X, Y) pairs are {(1, 2), (1, 3), . . . , (5, 4)}, and the joint pmf of (X, Y) is 3 5.2 p(x,y)= Find the expected value for the number of seats seperating two individuals. Covariance The covariance between two rv’s X and Y is Cov(X, Y) = E[(X – X)(Y – Y)] = 4 5.2 Depending on whether X and Y are discrete or continuous. An simplified formula for the covariance is: Cov(X,Y) = E(XY) ‒ µX µY 5 5.2 Exercise 2: A nut company markets cans of delux mixed nuts containing almonds, cashews, and p...
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