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(b) Yrityksen johtaja vaittaa, etta vain yhdessa prosentissa tuotteista esiintyy vikoja. Pe- rusteluiksi poimittiin satunnaisesti 100 tuotetta suhteellisen osuuden testia varten. Nol- lahypoteesina oli, etta

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(b) Yrityksen johtaja vaittaa, etta vain yhdessa prosentissa tuotteista esiintyy vikoja. Pe- rusteluiksi poimittiin satunnaisesti 100 tuotetta suhteellisen osuuden testia varten. Nol- lahypoteesina oli, etta viallisten osuus on 1%, ja testissa kaytettiin kaksisuuntaista vai- htoehtoista hypoteesia. Testisuureen arvoksi saatiin 3.03, josta edelleen normaalijakau- masta p-arvoksi noin 0.2%. Yritysjohtaja hehkuttaa olleensa oikeassa. Esita nakemyksesi siita, voiko testin tulokseen luottaa. (3p)

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