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20 December, 00:11

The probability that a randomly-selected U. S. household owns a pet is 0.39. Given that a household owns a pet, the probability that it owns a dog is 0.67 and the probability that it owns a cat is 0.24. a) Given that a household owns a pet, what is the probability that the pet is not a cat or dog?

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  1. 20 December, 01:29
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    0.2508

    Step-by-step explanation:

    The question asks for a conditional probability.

    P (a household owns a dog if it owns a pet) = 0.67

    Then P (a household does not own a dog if it owns a pet) = 1 - 0.67 = 0.33

    P (a household owns a cat if it owns a pet) = 0.24

    Then P (a household does not own a cat if it owns a pet) = 1 - 0.24 = 0.76

    P (if a household owns a pet but the pet is not a cat or dog) = P (if a household owns a pet, it does not own a cat) * P (if a household owns a pet, it does not own a dog) = 0.33 * 0.76 = 0.2508
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