1. Bowei Xi is Assistant Professor, Department of Statistics, Purdue University, West Lafayette, IN 47907 . George Michailidis is Associate Professor, Department of Statistics , and Vijayan N. Nair is Professor, Department of Statistics and Industrial and Operations Engineering , University of Michigan, Ann Arbor, MI 48109. The authors thank the anonymous reviewers for many useful suggestions and Xiaodong Yang for help with the ARL calculations. They are especially grateful to Professor F. J. Samaniego,...