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Test di ipotesi Confronto tra medie e proporzioni

Test di ipotesi Confronto tra medie e proporzioni

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Statistica <strong>Test</strong> =<br />

Statistica <strong>di</strong> interesse – Valore Valore ipotizzato<br />

Errore Standard Statistica <strong>di</strong> interesse<br />

Statistica <strong>di</strong><br />

Valore ipotizzato<br />

interesse del parametro<br />

E.S. Statistica <strong>di</strong><br />

interesse<br />

t<br />

=<br />

( x − x ) − ( μ − μ )<br />

1<br />

s<br />

2<br />

p<br />

2<br />

⎛<br />

⎜<br />

⎝<br />

1<br />

n<br />

1<br />

+<br />

1<br />

1<br />

n<br />

2<br />

⎞<br />

⎟<br />

⎠<br />

2<br />

Varianza pooled

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