Consider the population of all families with two children. Representing the gender of each child using G for girl and B for boy results in four possibilities: BB, BG, GB, and GG. The gender information is sequential, with the first letter indicating the gender of the older sibling. Thus, a family having a girl first and then a boy would be denoted by a GB.
If we assume that a child is equally likely to be male or female, each of the four possibilities in the sample space for the experiment that selects at random from families with two children is equally likely.
2007-12-26
15:17:42
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6 answers
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asked by
Jerry
2