A recent survey indicates that 67% of U.S. Adults consider air conditioning a ne

Question

A recent survey indicates that 67% of U.S. Adults consider air conditioning a necessity. If you randomly select 16 adults what is the probability that exactly 13 of them consider air conditioning a necessity? (Source: Opinion Research Corporation) (Round to 2 decimal places) Again, a recent survey indicates that 67% of U.S. Adults consider air conditioning a necessity. What is the probability that at least 10 of the 16 randomly selected adults consider air conditioning a necessity? (Round to 2 decimal places)

Explanation / Answer

binom(16, 0.67) P(X = 13) = binompdf(16, 0.67, 13) = .0153110499 or .02 binom(10, 0.67) P(X = 16) = binompdf(10, 0.67, 16) = .0210354822 or .02

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