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Asymptotic second-order consistency for two-stage estimation methodologies and its applications. (English) Zbl 1440.62309

Summary: We consider fixed-size estimation for a linear function of means from independent and normally distributed populations having unknown and respective variances. We construct a fixed-width confidence interval with required accuracy about the magnitude of the length and the confidence coefficient. We propose a two-stage estimation methodology having the asymptotic second-order consistency with the required accuracy. The key is the asymptotic second-order analysis about the risk function. We give a variety of asymptotic characteristics about the estimation methodology, such as asymptotic sample size and asymptotic Fisher-information. With the help of the asymptotic second-order analysis, we also explore a number of generalizations and extensions of the two-stage methodology to such as bounded risk point estimation, multiple comparisons among components between the populations, and power analysis in equivalence tests to plan the appropriate sample size for a study.

MSC:

62L12 Sequential estimation
62F12 Asymptotic properties of parametric estimators
62F25 Parametric tolerance and confidence regions
62J15 Paired and multiple comparisons; multiple testing
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