Question: Assume that different groups oi couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed

Assume that different groups oi 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 eect, so the probability of a girl is 0.5. Assume that the groups consist of 21 couples. Complete parts [a] through {c} below. ( ..... a. Find the mean and the standard deviation for the numbers ot girls in groups of 21 bir'ns. The value of the mean is p: E. (Type an integer or a decimal. Do not round.)

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