In a chemical plant, 20 holding tanks are used for final product storage. Five tanks are selected at random and without replacement. Suppose that six of the tanks contain material in which the viscosity exceeds the customer requirements. How many different samples are possible? What is the probability that exactly two tanks in the sample contains high-viscosity material? a. 15,504, Probability = 0.1409 O b. 10,626, Probability = 0.4607 O. 15,504, Probability = 0.3522 d. NONE

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