Question

Researchers want to test the effectiveness of a new anti-anxiety medication. Three hundred eighty patients were recruited to participate in the clinical trial. In clinical testing, 73 out of 200 people taking the medication reported symptoms of anxiety. Of the other 180 people receiving a placebo, 86 reported symptoms of anxiety. Combining the two samples together, what is the overall proportion of those who reported symptoms of anxiety among all participants?

0.37

0.42

0.33

0.29

Answer 1

Sample umber of General proportion Size events Sample l | = 2 00| x1= 73 p 10.42 Sample 2 | n2 = 1801 x2 = 86| 게 ' ,