Contracts for two construction jobs are randomly assigned to one
or more of three firms A,...
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Contracts for two construction jobs are randomly assigned to oneor more of three firms A, B, and C. Let Y1 denote the number ofcontracts assigned to firm A and Y2 the number of contractsassigned to firm B. Recall that each firm can receive 0, 1 or 2contracts.
(b) Find the marginal probability of Y1 and Y2.
(c) Are Y1 and Y2 independent? Why? (d) Find E(Y1 ? Y2).
(e) Find Cov(Y1, Y2)
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bAll nine possible assignments of construction jobs to the threefirms AA AB AC BA BB BC CA CB CC The first symbolsignifies the selection for the first job
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