Question
In one large city. 40% of all households own a dog. 32% own a cat, and 18% own both. Suppose we randomly select a household and learn that the houschold owns a cat. Find the probability that the household owns a dog. P(Dvert C)=0.18 P(Dvert C)=0.54 P(Dvert C)=0.563 P(Dvert C)=0.40
Solution
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Xavier
Master · Tutor for 5 years
Answer
Let D be the event that a household owns a dog, and C be the event that a household owns a cat. We are given the following probabilities:* P(D) = 0.40 (Probability of owning a dog)* P(C) = 0.32 (Probability of owning a cat)* P(D ∩ C) = 0.18 (Probability of owning both a dog and a cat)We are asked to find the probability that a household owns a dog given that it owns a cat, which is written as P(D|C). We can use the formula for conditional probability:P(D|C) = P(D ∩ C) / P(C)Plugging in the given values:P(D|C) = 0.18 / 0.32P(D|C) = 0.5625Rounding to three decimal places, we get 0.563.Therefore, the probability that the household owns a dog given that it owns a cat is 0.563. So the correct answer is
.Final Answer: The final answer is