SOLUTION: In a survey 63% of Americans said they own an answering machine. if 14 Americans are selected at the random. find the probability that exactly 9 own an answering machine.
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Question 731769: In a survey 63% of Americans said they own an answering machine. if 14 Americans are selected at the random. find the probability that exactly 9 own an answering machine. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In a survey 63% of Americans said they own an answering machine. if 14 Americans are selected at the random. find the probability that exactly 9 own an answering machine.
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Binomial Problem with n = 14 and p(have) = 0.63
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P(x = 9) = 14C9(0.63)^9*(0.37)^5 = binompdf(14,0.63,9) = 0.2170
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Cheers,
Stan H.
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