Researchers want to test the effectiveness of a new pain medication. Four hundred people were recruited...

Researchers want to test the effectiveness of a new pain medication. Four hundred people were recruited to participate in the clinical trial. In clinical testing, 40 out of 201 people taking the medication reported pain symptoms. Of the other 199 people receiving a placebo, 20 reported pain symptoms. Combining the two samples together, what is the overall proportion of those who reported pain symptoms among all participants?

0.15

0.34

0.47

0.19

Expert Solution

Overall proportion = (40 + 20)/(201 + 199)

= 60/400 = 0.15

Option - A is correct.

orchestra answered 2 years ago

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