Solution: In Exercise 5.1, we determined that the joint distribution of Y1, the number
Chapter 5, Problem 5.89(choose chapter or problem)
In Exercise 5.1, we determined that the joint distribution of Y1, the number of contracts awarded to firm A, and Y2, the number of contracts awarded to firm B, is given by the entries in the following table. y1 y2 012 0 1/9 2/9 1/9 1 2/9 2/9 0 2 1/90 0 Find Cov(Y1, Y2). Does it surprise you that Cov(Y1, Y2) is negative? Why?
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