This study is concerned with the problem of estimating reliability function parameters two-parameter Burr XII distribution when data are complete. Concepts such as likelihood estimator, bias, bias ratio, and mean square error defined. The purpose this research investigate properties double-stage shrinkage estimators (DSSEs) obtain equations error, ratio. relative efficiency proposed also invest...

utilizing the gathered failure data and failure interval data from tabas coal mine in two years, this paper discusses the reliability of powered supports. the data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. the results show that the powered supports follow the gamma reliability function. the reliability of the machine de...