Question: In a study to determine whether an association exists between maternal rubella and congenital cataracts, samples of 20 children with congenital cataracts and 25 children

In a study to determine whether an association exists between maternal rubella and congenital cataracts, samples of 20 children with congenital cataracts and 25 children without congenital cataracts were selected.The mother of each child was asked whether she had rubella while carrying the child.The data are given below.Assume that all z-based methods are valid.

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