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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Calcolo delle probabilità e statistica matematica > Filez > Esame del 11/02/2009 De Falco
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darkman13
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Esame del 11/02/2009 De Falco

Ciao, nessuno sciuro delle proprie risposte, può postarle?

12-02-2009 09:17
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donivl16
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chi ha fatto l'esercizio V.6 e 7 io propio nn ho idea da dove iniziare . il suggerimento dice di usare l'approssimazione normale ma nn l'ho visto mai la forma P(90<= M <= 110)
qualcuno mi puo aiutare.
grazie in anticipo.

12-02-2009 13:01
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middu
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e usala nel modo : P(90 - E(M)/radice(varianza(M)) <= M- E(M)/radice(var(M)) <= 110- E(M) /radice(varianza(M)) dove con varianza di M e valore atteso di M devi sostituire i valori che hai ottenuto in precedenza . Poi ti calcoli così la probabilità F(110- E(M) /radice(varianza(M))m - F((90 - E(M)/radice(varianza(M)) e dopo ti fai i conti

13-02-2009 12:31
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