A Bayesian Approach to the Comparison of Two Means

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A hierarchical Bayesian approach to the problem of comparison of two means is considered. Hypothesis testing, ranking and selection, and estimation (after selection) are treated. Under the hypothesis that two means are different, it is desired to select the population which has the larger mean. Expressions for the ranking probability of each mean being the larger and the corresponding estimate of each mean are given. For certain priors, it is possible to express the quantities of interest in closed form. A simulation study has been done to compare mean square errors of a hierarchical Bayesian estimator and some of the existing estimators of the selected mean. The case of comparing two means in the presence of block effects has also been considered and an example is presented to illustrate the methodology.

Original languageEnglish (US)
Pages (from-to)3785-3800
Number of pages16
JournalCommunications in Statistics - Theory and Methods
Issue number10
StatePublished - Jan 1989

All Science Journal Classification (ASJC) codes

  • Statistics and Probability


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