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In estimating parameter of the underlying distribution, the statistician may have prior information about parameter such that the true value of parameter lies in the neighborhood of a known value. We ...consider the problem of estimating variance of normal distribution when it is preliminarily conjectured that the true of variance lies in the interval. We suggest two estimators and compare these two estimators with the preliminary test estimator and the sample unbiased variance by using the mean square error.続きを見る
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