Testing linear forms of variance components bygeneralized xed { level
نویسنده
چکیده
This report extends the technique of testing single variance components with generalized xed{level tests | in situations when nuisance parameters make exact testing impossible | to the more general way of testing hypotheses on linear forms of variance components. An extension of the deenition of a generalized test variable leads to a generalized xed{level test for arbitrary linear hypotheses on variance components in balanced mixed linear models of the ANOVA{type. For point null hypotheses an alternative for the known method is given, which ist straightforward in contrast to the classic form. An example (2{way nested classiication with random eeects) illustrates the way how to use the results and simulation studies are carried out to prove the quality of the presented methods.
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