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Konfidensintervaller Hypotesetest og

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Relation til konfidens intervaller<br />

95% konfidensinterval<br />

σ<br />

x±<br />

1 . 96 = 31.<br />

5±<br />

1.<br />

96<br />

n<br />

Middelværdi<br />

under<br />

H 0<br />

μ 0<br />

for μ, dvs. α = 0.05:<br />

5<br />

50<br />

95% konfidensinterval<br />

omkring observeret<br />

middelværdi<br />

= 30 32.88<br />

30.11 x = 31.5<br />

Da (1−α)100% konfidensintervallet ikke overlapper μ0 er p-værdien mindre<br />

end α=0.05, dvs. vi forkaster H0.

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