A Study Examined the Effectiveness of Botox Injections in the Corrugator

Multiple Choice

A study examined the effectiveness of Botox injections in the corrugator supercilii muscles for the treatment of chronic migraines. Of the 29 migraine-prone patients participating in the study, 24 reported some form of improvement. What is a plus four 95% confidence interval for the population proportion of migraine patients who benefit from such Botox injections? Assume the necessary assumptions for this confidence interval are met.

A) 0.690 to 0.965
B) 0.688 to 0.967
C) 0.717 to 0.859
D) 0.648 to 0.927