Courtroom of Evidence
Set up the correct hypotheses. H₀ is the default to challenge — not the claim you're investigating.
Dr. Floe
“Every hypothesis test starts with the null — the default position. The burden of proof falls on whoever challenges it.”
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4 scenarios
Scenario 1 / 4
The Arctic Research Station claims average sea ice thickness is at least 2.3 meters. A climate journalist suspects it has dropped below that.
Parameter: μ
Your perspective
You bear the burden of proof. Your claim goes in Hₐ.
H₀ (Null — the default)
μ
Hₐ (Alternative — what you're trying to show)
μ
Burden of Proof
H₀
Hₐ
H₀ (Default / Null)
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Hₐ (Alternative / Accusation)
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