Equivariance and Generalized Inference in Two-Sample Location-Scale Families

We are interested in-typical Behrens-Fisher problem in general location-scale families. We present a method of constructing generalized pivotal quantity GPQ and generalized P value GPV for the difference between two location parameters. The suggested method is based on the minimum risk equivariant estimators MREs , and thus, it is an extension of the methods based onmaximum likelihood estimators and conditional inference, which have been, so far, applied to some specific distributions. The efficiency of the procedure is illustrated by Monte Carlo simulation studies. Finally, we apply the proposed method to two real datasets.