Use the following information to answer questions . Suppose that a recent poll of American households
about pet ownership found that for households with pets, 45% owned a dog, 34% owned a cat, and 10% owned a
bird. Suppose that three households are selected randomly and with replacement and the ownership is mutually
exclusive.
-What is the probability that at least two of the three randomly selected households own either a cat or a dog? (Round to the nearest hundredth)
A)0.97
B)0.89
C)0.06
D)0.94

Question

Quizplus · Accepted Answer

The probability of selecting a household that owns either a cat or a dog is 45% + 34% = 79%. The probability of at least two out of three households owning either a cat or a dog can be calculated using the binomial probability formula, considering the scenarios where exactly two households or all three households own a cat or a dog. The calculation involves finding the probabilities of these scenarios and adding them together, leading to a result that rounds to 0.89.

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