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A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 658 babies were I born, and 329

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A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 658 babies were I" born, and 329 of them were girls. Use the sample data to construct a 99% condence interval estimate of the l percentage of girls born. Based on the result, does the method appear to be effective? .v k M D

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