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 K 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 31 couples. Complete parts (a) through (c) below. . Find the mean and the standard deviation for the numbers of girls in groups of 31 births. The value of the mean is u =. (Type an integer or a decimal. Do not round.) essa drat View an example Get more help - Clear all Check answer OCT 2 MacBook Air 20 F6 DII F8 A 3 5 7 O E R T Y U O P D F G H K C V B N M alt command option