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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 395<br />

✬<br />

VII. Majhen vzorec za (1 − α)%-ni interval zaupanja za<br />

razliko µ1 − µ2, kadar ne poznamo odklonov σ1 in σ2,<br />

vzorci pa so majhni in izbrani neodvisno:<br />

kjer je<br />

✫<br />

ν =<br />

y 1 − y 2 ± t α/2,ν<br />

<br />

s 2 1<br />

n1<br />

+ s2 2<br />

n2<br />

<br />

2 s1/n1 + s2 2 2/n2<br />

(s 2 1/n1) 2 /(n1 − 1) + (s 2 2/n2) 2 /(n2 − 1)<br />

<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

▲<br />

✩<br />

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