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