Welch's t-test: Difference between revisions

\Beta(x,y) = \fracdfrac{\Gamma(x+y}{x y} )\prod_{n=1}^,\infty \leftGamma( 1+ \dfrac{x y)}{n \Gamma(x+y+n)}\right)^{-1} = \dfrac{exp((\ln(\Gamma(x)) + \,ln(\Gamma(y)}{)) - \ln(\Gamma(x+y)}))