SOLUTION: 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

Question 1132754: 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 is 0.5. Assume that the groups consist of 36 couples. Complete parts (a) through (c) below.
a. Find the mean and the standard deviation for the numbers of girls in groups of 36 births.
The value of the mean is muequals
_?
(Type an integer or a decimal. Do not round.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The mean is 36*0.5 or 18.
The variance is 36*0.5*(1-0.5)=9
The standard deviation is sqrt (V)=3.
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