Efficiency in Estimation of Mean Time to Failure in a Two-Parameter Exponential Failure Model
Abstract
**Please note that the full text is embargoed** ABSTRACT: When comparing two point estimators of some parametric function,
Pitman-closeness efficiency gives the "odds" in favor of one of
the estimators being closer to the true value than is the other
in a given situation. Through this measure of efficiency, we
compare (i) the maximum likelihood estimator, (ii) the minimum
variance unbiased estimator, (iii) the best invariant estimator,
and (iv) the median unbiased estimator of the mean time to
failure in a two-parameter exponential failure model. Mean
squared efficiency is also discussed.