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Monte Carol based tests for the Behrens Fisher Problem enhance the statistical power and performs better than Welch's tapproximation, see Ullah et al. (2019).
Package details 


Author  YouGan Wang, Na Wang 
Maintainer  YouGan Wang <yougan.wang@qut.edu.au> 
License  GPL (>= 2.0) 
Version  0.1.0 
Package repository  View on CRAN 
Installation 
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