In December 2006, the International Breastfeeding Journal published results of a study conducted at the University of Sydney on the effects of epidural on breastfeeding. Researchers followed up on 1178 births, noting whether the mother had an epidural and whether the baby was still nursing after 6 months. What is the right test to apply in this case? A. paired t-test B. two-sample t-test     C. z-test for one proportion D. chi-square test E. regression

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