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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 261<br />

✬<br />

✫<br />

Skica dokaz centralnega limitnega izreka<br />

Naj bo Zi = Xi − µ<br />

. Potem je<br />

σ<br />

Za Yn =<br />

X − µ<br />

σ/ √ n<br />

Mn(t) =<br />

<br />

kjer je k = E(Z 3 i ).<br />

MZ(t) = 1 − t2<br />

2!<br />

= 1<br />

√ n<br />

MZ<br />

<br />

t<br />

√ n<br />

n<br />

i=1 Xi − nµ<br />

σ<br />

n<br />

=<br />

<br />

+ t3<br />

3! E(Z3 i ) + · · ·<br />

1 − t2<br />

2 n<br />

= 1<br />

√ n<br />

n<br />

Zi velja<br />

i=1<br />

t3<br />

+ k + · · ·<br />

3! n3/2 Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

n<br />

,<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

✩<br />

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