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Mean and Standard Deviation of Boys or Girls Worldwide, the proportion of babies who are girls...

Mean and Standard Deviation of Boys or Girls

Worldwide, the proportion of babies who are girls is about 0.49 . Let the random variable X represent the number of girls in fivechildren. Find the mean and standard deviation of this random variable.

Enter the exact answer for the mean, and round your answer for the standard deviation to three decimal places.

μ=

sd=

Math   Statistics-And-Probability   
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