Asked by Anonymous

If boys and girls are equally likely and groups 400 births are randomly selected find the standard deviation

Answers

Answered by MathGuru
Standard deviation = √npq = √[(400)(.5)(.5)] = √(100) = 10

Note: n = sample size, p = .5, q = .5

Answered by JOANNIE
could you please break this answer down, I'm not sure how you got .5. please
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