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Practice
A researcher argues: "Since our experiment found p = 0.23, which is not significant, the treatment has no effect." What is the logical error?
A
Type I error — the researcher is incorrectly rejecting H₀
B
Accepting the null hypothesis — "fail to reject H₀" ≠ "H₀ is proven true"
C
Multiple testing error — p = 0.23 across multiple outcomes
D
Survivorship bias — only certain outcomes were measured
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