Anthropologists can estimate the birthrate of an ancient society by studying the age distribution of skeletons found in ancient cemeteries. The numbers of skeletons found at two such sites, as reported in the article ??Paleoanthropological Traces of a Neolithic Demographic Transition?? (J. Bocquet-Appel, Current Anthropology, 2002:637??650) are given in the following table:

Do these data provide convincing evidence that the age distributions differ between the two sites?

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Ages of Skeletons 20 years or more 0-4 5-19 Site years years Casa da Moura Wandersleben 27 61 126 38 60 118