%0 Journal Article %T Characteristic Reliability Measures of Mixed Standby Components and Asymptotic Estimation %J International Journal of Statistics and Applications %@ 2168-5215 %D 2012 %I %R 10.5923/j.statistics.20120203.01 %X In this paper, we investigate the reliability measures: availability and mean time to system failure, for four configurations of series systems with mixed standby components: cold and warm. The time to repair and to failure for each of the operative and warm standby components are assumed to follow the exponential distribution. Comparisons of the computed¡¯s and steady state availabilities for the four configurations are obtained for specific values of distribution parameters and cost of the components. The configurations are then ranked based on , and cost/ benefit, where benefit is either or . Asymptotic estimation of , and cost/ benefit are computed for the optimal systems. %K Availability %K Mean Time to System Failure %K Asymptotic Estimation %K Series System %U http://article.sapub.org/10.5923.j.statistics.20120203.01.html