Multiple Choice
Juanita has a headache one evening so she takes the experimental drug Zenax to eliminate her headache. She goes to sleep and finds her headache gone the next day. Do these results show that Zenax was effective?
A) Yes, because her headache is gone.
B) No, because something else could have caused her headache to disappear.
C) Yes, because the administration of Zenax occurred before her headache disappeared.
D) No, because there is a negative correlation between Zenax use and mood.
Correct Answer:
Verified
Correct Answer:
Verified
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