estimating a bounded normal mean under the linex loss function
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abstract
let x be a random variable from a normal distribution with unknown mean θ and known variance σ2. in many practical situations, θ is known in advance to lie in an interval, say [−m,m], for some m > 0. as the usual estimator of θ, i.e., x under the linex loss function is inadmissible, finding some competitors for x becomes worthwhile. the only study in the literature considered the problem of minimax estimation of θ in this paper, by constructing a dominating class of estimators, we show that the maximum likelihood estimator is inadmissible. then, as a competitor, the bayes estimator associated with a uniform prior on the interval [−m,m] is proposed. finally, considering risk performance as a comparison criterion, the estimators are compared and depending on the values taken by θ in the interval [−m,m], the appropriate estimator is suggested.
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Journal title:
journal of sciences, islamic republic of iranPublisher: university of tehran
ISSN 1016-1104
volume 24
issue 2 2013
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