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Mehran Naghizadeh Qomi

Mehran Naghizadeh Qomi

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Mathematical Sciences
Address: Department of Statistics - University of Mazandaran - Babolsar- Iran
Phone: 01135302473

Research

Title
Estimation After Selection Under Reflected Normal Loss Function
Type
JournalPaper
Keywords
Estimation after selection, Inadmissible estimators, Minimax estimators, Normal distribution, Reflected normal loss function
Year
2012
Journal COMMUNICATIONS IN STATISTICS-THEORY AND METHODS
DOI
Researchers Mehran Naghizadeh Qomi ، nader nematollahi ، ahmad parsian

Abstract

Let X 1 and X 2 be two independent random variables from normal populations Π1, Π2 with different unknown location parameters θ1 and θ2, respectively and common known scale parameter σ. Let X (2) = max (X 1, X 2) and X (1) = min (X 1, X 2). We consider the problem of estimating the location parameter θ M (or θ J ) of the selected population under the reflected normal loss function. We obtain minimax estimators of θ M and θ J . Also, we provide sufficient conditions for the inadmissibility of invariant estimators of θ M and θ J .