A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 310 babies were born, and 279 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? < p< (Round to three decimal places as needed.) Does the method appear to be effective? O No, the proportion of girls is not significantly different from 0.5. O Yes, the proportion of girls is significantly different from 0.5.
A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 310 babies were born, and 279 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? < p< (Round to three decimal places as needed.) Does the method appear to be effective? O No, the proportion of girls is not significantly different from 0.5. O Yes, the proportion of girls is significantly different from 0.5.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Question
A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 310 babies were
born, and 279 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?
< p< (Round to three decimal places as needed.)
Does the method appear to be effective?
O
No, the proportion of girls is not significantly different from 0.5.
O
Yes, the proportion of girls is significantly different from 0.5.
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