SOLUTION: If the probability of having at least 1 boy in a 2-child family is 0.65, what is the probability of having 2 girls? I was thinking that maybe i can multiply 1/ 0.65 x 2/1 but i

Algebra ->  Probability-and-statistics -> SOLUTION: If the probability of having at least 1 boy in a 2-child family is 0.65, what is the probability of having 2 girls? I was thinking that maybe i can multiply 1/ 0.65 x 2/1 but i       Log On


   



Question 581023: If the probability of having at least 1 boy in a 2-child family is 0.65, what is the probability of having 2 girls?
I was thinking that maybe i can multiply 1/ 0.65 x 2/1 but i dont think that's the solution.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If the probability of having at least 1 boy in a 2-child family is 0.65, what is the probability of having 2 girls?
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P(at least one boy) = 1 - P(no boys) = 0.65
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Then P(no boys) = 1-0.65 = 0.35
P(2 girls) = P(no boys in a family of 2) = 0.35
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Cheers,
Stan H.
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