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17 November, 05:37

In a certain country, the true probability of a baby being a boy is 0.528. among the next four randomly selected births in the country, what is the probability that at least one of them is a girl ?

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  1. 17 November, 05:47
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    Here are the two methods you can perform this question : Method 1:

    Probability that they are boys: 0.528 (4 squared) = 0.0777205Probability that 1 is a girl: 1 - 0.0777205 = 0.9222795 = 92.22%

    Method 2:n=4p (boys) = 0.5281-o. 528 = 0.9222795 = 92.22%
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