Panel on Statistical Methods for Testing and Evaluating Defense Systems, National Research Council ; Michael L. Cohen, Duane L. Steffey, and John E. Rolph ; National Research Council Staff ; Duane L. Steffey ; John E. Rolph ; Michael L. Cohen ; National Research Council (U.S.) ; Rolph, John E. ; Steffey, Duane L. ; Cohen, Michael L. ; Commission on Behavioral and Social Sciences and Education ; Division of Behavioral and Social Sciences and Education ; Panel on Statistical Methods for Testing and Evaluating Defense Systems