APFIVE Statistical Power and Hypothesis Testing
A researcher conducted a double-blind experiment comparing a new pain medication to a standard treatment. Results showed no significant difference between treatments (p = 0.37). The study had 80% power to detect a clinically meaningful difference. What is the most appropriate conclusion?
A
A larger sample size is needed to detect the difference.
B
There is evidence the new medication is equivalent to standard treatment.
C
The experiment failed to prove anything.
D
The new medication is ineffective.
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