Question
Asked Feb 19, 2020
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Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a​ girl, but assume that the method has no​ effect, so the probability of a girl is0.5. Assume that the groups consist of 48 couples.

Is the result of 35 girls a result that is significantly​ high? What does it suggest about the effectiveness of the​ method?

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Expert Answer

Step 1

From the provided information,

Probability of a girl (p) = 0.5

Number of girls in group (n) = 48

The process will follow binomial distribution. The mean of the binomial distribution can be obtained as:

Statistics homework question answer, step 1, image 1

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