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to ST2304 Statistical Modelling for Biologists/Biotechnologists
Hei!
Jeg skjønte ikke hvordan man kom fram til den grafen i oppgave 1 c).
Jeg skønner at teststyrken vokser fra 0 til 1 med p, og at den er lik
alfa når p=p0. Men skal man kunne tegne grafen bare ut fra det? Jeg
tenkte man skulle finne ulike verdier for p ut fra ligning (1) og
tabellen over standard normalfordeling...
Jarle Tufto
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Jun 8, 2011, 4:37:58 AM6/8/11
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to ST2304 Statistical Modelling for Biologists/Biotechnologists
For en-sidige tester vil styrkefunksjonen alltid bli en slik sigmoid
kurve så hvis du bare skal skissere hvordan kurven ser ut er det nok
at den har egenskapene du nevner.