A manager removed 3 pieces of electronic equipment at random from a display in an electronics store that featured 8 HDTVs, 7 laptops, and 5 Blue-ray Players. What is the covariance of the number of HDTVs and laptops removed?
A manager removed 3 pieces of electronic equipment at random from a display in an electronics store that featured 8 HDTVs, 7 laptops, and 5 Blue-ray Players. What is the covariance of the number of HDTVs and laptops removed?
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