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Psychology
MEDIUM
ENGLISH
Psychology
An experimenter conducts an experiments on the effects of a drug to control hallucinations. He declares the results to be “statistically significant,’ which usually means that:
A
even though appropriate statistics were used, no differences could be detected between experimental and control groups
Option A
B
the results have important implications for theory or practice
Option B
differences between experimental and control group of this size occur by chance only 5 times out of 100 (or less)
Correct answer
D
differences between experimental and control groups were so large they could never occur by chance alone
Option D
Correct answer: C
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