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suppose a chemical engineer randomly selects 3 catalysts for testing from a group of 10 catalysts, 6 of which have low acidity & 4 have high acidity. What is the probability that exactly2 lower acidic catalysts are selected?

1 Answer

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Explanation:

Total catalysts = 10

Probability of 2 lower acidic catalysts = 2/10 = 1/5

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