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The following contingency table describes pet ownership of dogs and cats.

No Dog Golden Doodle Corgi Husky
Cat 0.3 0.1 0.05 0.03
No Cat 0.12 0.06 0.23 0.11
Find the probability of owning a cat.
Find the probability of owning any of the three types of dogs.
Find the probability of owning a cat and any dog.
Find the probability of someone owning a cat given that they own any dog.
Find the probability of someone owning any dog given that they own a cat.

User Madhukar
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1 Answer

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Final Answer:

The probability of owning a cat is 0.48.

The probability of owning any of the three types of dogs is 0.39.

The probability of owning a cat and any dog is 0.25.

The probability of someone owning a cat given that they own any dog is 0.641.

The probability of someone owning any dog given that they own a cat is 0.52.

Step-by-step explanation:

The probability of owning a cat can be found by summing the probabilities in the "Cat" row of the contingency table. Therefore, P(Cat) = P(Cat and No Dog) + P(Cat and Golden Doodle) + P(Cat and Corgi) + P(Cat and Husky) = 0.3 + 0.1 + 0.05 + 0.03 = 0.48.

To determine the probability of owning any of the three types of dogs, we sum the probabilities in the "Golden Doodle," "Corgi," and "Husky" columns. Therefore, P(Any Dog) = P(No Cat and Golden Doodle) + P(Cat and Golden Doodle) + P(No Cat and Corgi) + P(Cat and Corgi) + P(No Cat and Husky) + P(Cat and Husky) = 0.12 + 0.06 + 0.23 + 0.11 = 0.39.

The probability of owning a cat and any dog is obtained by summing the probabilities in the cells where both a cat and a dog are present. Therefore, P(Cat and Any Dog) = P(Cat and Golden Doodle) + P(Cat and Corgi) + P(Cat and Husky) = 0.1 + 0.05 + 0.03 = 0.25.

To find the probability of someone owning a cat given that they own any dog, we use the conditional probability formula: P(Cat | Any Dog) = P(Cat and Any Dog) / P(Any Dog) = 0.25 / 0.39 ≈ 0.641.

Finally, the probability of someone owning any dog given that they own a cat is determined using the conditional probability formula: P(Any Dog | Cat) = P(Cat and Any Dog) / P(Cat) = 0.25 / 0.48 ≈ 0.52.

User MForster
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