SOLUTION: Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Suppose 650 couples have

Algebra ->  Probability-and-statistics -> SOLUTION: Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Suppose 650 couples have       Log On

Hi



Binomial distribution:  p(girl) = 1/2, q = 1/2

mean =np = (1/2)650 = 325

variance = npq = 325(1/2) = 162.5

SD = sqrt(162.5)= 12.7475