The framework that encompasses the statistical and mathematical approaches for T and E is called scientific based test design SBTD. SBTD can be applied to all fields and application areas within the T and E realm. There is no set of T and E experiments in which SBTD does not apply. For example, consider the program manager PM who is involved with IT systems and feels that SBTD cannot be applied to hisher respective system because the variable measures of interest in the experiment results in a binary outcome. In other words, did the system work yes or no Although this is a formidable challenge that must be considered prior to running the experiment, it is not a showstopper.