Since the enactment of the Telecommunications Act of 1996 (1996), extensive expert testimony has justified use of the 'modified' t statistic (Brownie et al. Biometrics 46 (1990) 259-266) for performing two-sample hypothesis tests on Bell companies' CLEC and ILEC performance measurement data....

Until recently, since Jobson amp; Korkie (1981) derivations of the asymptotic distribution of the Sharpe ratio that are practically useable for generating confidence intervals or for conducting one- and two-sample hypothesis tests have relied on the restrictive, and now widely refuted,...