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Suppose X1, X2 are the number of gallons of type A and type B industrial products purchased by a company, respectively. The variances of X1and

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Suppose X1, X2 are the number of gallons of type A and type B industrial products purchased by a company, respectively. The variances of X1and X2 are 1 and 2, respectively and the covariance of X1and X2 is -1. What is Var (3X1 - 2X2) ? O 26 O 36 O 29 O 34

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