Question: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 355babies wereborn, and 284of them were girls.

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 355babies wereborn, and 284of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born. Based on theresult, does the method appear to beeffective?

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