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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 504<br />

✬<br />

Primer 1: Preveriti ˇzelimo domnevo, da so dekleta na izpitu boljˇsa od<br />

fantov. To domnevo preverimo tako, da izberemo slučajni vzorec 36 deklet<br />

in slučajni vzorec 36 fantov, za katere imamo izpitne rezultate, na katerih<br />

izračunamo naslednje statistične karakteristike:<br />

✫<br />

XF = 7, 0, sF = 1<br />

XD = 7, 2, sD = 1<br />

Domnevo preverimo pri 5% stopnji značilnosti.<br />

Postavimo ničelno in osnovno domnevo:<br />

H0 : µD = µF oziroma µD − µF = 0,<br />

H1 : µD > µF oziroma µD − µF > 0.<br />

Univerza v Ljubljani ▲<br />

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▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

▲<br />

✩<br />

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