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Section 7.1 Homework Question 5
Section 7.1 Homework
5. A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 380 babies were born, and 323 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?
Does the method appear to be effective?
- No, the proportion of girls is not significantly different from 0.5.
- Yes, the proportion of girls is significantly different from 0.5.