Asked by Anonymous

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

11 years ago

Answered by MathGuru

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

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

11 years ago

Answered by JOANNIE

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

7 years ago

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