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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 410<br />

✬<br />

Primer: Na vzorcu (n = 151), ki je bil izveden v okviru ankete ’Drobno<br />

gospodarstvo v Sloveniji’, so izračunali. da je deleˇz obrtnih podjetij<br />

p = 0, 50. Pri 5 % tveganju ˇzelimo z intervalom zaupanja oceniti deleˇz<br />

obrtnih majhnih podjetij v Sloveniji.<br />

✫<br />

0, 50 − 1.96<br />

0, 50 × 0, 50<br />

√ 151<br />

< π < 0, 50 + 1.96<br />

0, 50 − 0, 08 < π < 0, 50 + 0, 08<br />

0, 50 × 0, 50<br />

√ 151<br />

S 5% stopnjo tveganja trdimo, da je deleˇz obrtnih majhnih podjetij v<br />

Sloveniji glede na vsa majhna podjetja med 0,42 in 0,58.<br />

Univerza v Ljubljani ▲<br />

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☛ ✖<br />

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✩<br />

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