Britany R.
asked • 07/14/19A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study
435
babies were born, and
348
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?
Joseph K. answered • 07/15/19
The success of the student is my most important reward.
The 99% Confidence Interval is
phat ±z{(phat)(1-phat)/n}^.5
phat=348/435
z=2.58
n=435
The confidence interval is (.7506,.8494) which seems to indicate that the method is effective.
Get a free answer to a quick problem.
Most questions answered within 4 hours.
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
