Question: Are boys more likely? We hear that newborn babies are more likely to be boys than girls. Is this true? A random sample of 25,468 firstborn children included 13,173 boys.
(a) Do these data give convincing evidence that firstborn children are more likely to be boys than girls?
(b) To what population can the results of this study be generalized: all children or all firstborn children? Justify your answer.