Some tests with specified size for the behrens-fisher problem
Arjun K. Gupta, Yining Wang · Communication in Statistics- Theory and Methods · 1999
For a given significance level α, Welch's approximate t-test for the Behrens-Fisher Problem is modified to get a test with size α. A useful result for carrying out the Berger and Boos test is provided. Simulation results give power comparisons of several size α tests.