Department of Statistics, Purdue University, West Lafayette, IN, USA. ovitek@stat.purdue.edu|Department of Statistics, Purdue University, West Lafayette, IN, USA. ovitek@stat.purdue.edu|Department of Statistics, Purdue University, West Lafayette, IN, USA. ovitek@stat.purdue.edu|Department of Statistics, Purdue University, West Lafayette, IN, USA. ovitek@stat.purdue.edu|Department of Statistics, Purdue University, West Lafayette, IN, USA. ovitek@stat.purdue.edu