Question 206390
Find the probability. 
In one town, 35% of households have a cat, 23% of households have a dog, and 7% have both. What is the probability that a household has a dog if you know that it has a cat?
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P(dog|cat) = P(dog and cat)/P(cat) = 0.07/0.35 = 0.2
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Cheers,
Stan H.