A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 380 babies were born, and 342 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born. Based on the result, does the method appear to be effective?

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Q: Can you show me how to solve the question above in excel please?

A: null and alternative hypothesis H0:μ=0H1:μ≠0

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