A lemma asserting that in the problem of statistically testing a simple hypothesis $H_0$ against a simple alternative $H_1$ the likelihood-ratio test is a most-powerful test among all statistical tests having one and the same given significance level. It was proved by J. Neyman and E.S. Pearson . It is often called the fundamental lemma of mathematical statistics. See also Statistical hypotheses, verification of.
|||J. Neyman, E.S. Pearson, "On the problem of the most efficient tests of statistical hypotheses" Philos. Trans. Roy. Soc. London Ser. A. , 231 (1933) pp. 289–337|
|||E.L. Lehmann, "Statistical hypotheses testing" , Wiley (1978)|
Neyman–Pearson lemma. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Neyman%E2%80%93Pearson_lemma&oldid=22846