Moran (1974) presented data on the relationship, for Australian births, between maternal age and Down syndrome (a serious handicapping condition on which psychologists have done a lot of work). The data follow, though, in a form that may require some minor calculations on your part to be meaningful. What can you conclude from these results?

Further information on Down Syndrome and maternal age can be found at
https://www.aafp.org/afp/20000815/825.html.

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Total Number of Births Number of Births with Down Syndrome Age of Mother 20 or less 20-24 25-29 30-34 35-39 40 44 45 or more 35,555 207931 253,450 170,970 86046 24,498 1,707 15 128 208 194 197 240 37 O Congage Learning