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12-05-2018
Mathematics

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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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asmak525 asmak525

21-05-2018

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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