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In a certain​ country, the true probability of a baby being a girlgirl is 0.4740.474. Among the next sevenseven randomly selected births in the​ country, what is the probability that at least one of them is a boyboy​?

Guest Feb 20, 2017
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 #1
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77 or seven randomly selected births?

Scruffy23.  Feb 20, 2017
 #2
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P(at least one boy)  = 

 

1 - P(no boys)  =

 

 ( .474 )^7  ≈  .00538  ≈  .538%

 

 

cool cool cool

CPhill  Feb 20, 2017

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