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In a certain? country, the true probability of a baby being a boy is 0.531. Among...

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Basic Math

In a certain? country, the true probability of a baby being aboy is 0.531. Among the next six randomly selected births in the?country, what is the probability that at least one of them is agirl?

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4.4 Ratings (917 Votes)

P(boy) = 0.531

P(girl) = 1 - 0.531 = 0.469

n = 6

P(at leat one of them is a girl) = 1 - P(none of them are girl)

                                                = 1 - P(all 6 are boys)

                                                = 1 - 0.5316

                                                = 0.9776
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