%0 Journal Article
%T Two-Stage Improved Group Plans for Burr Type XII Distributions
%J American Journal of Mathematics and Statistics
%@ 2162-8475
%D 2012
%I 
%R 10.5923/j.ajms.20120203.04
%X In this paper, we present two-stage group plan for Burr type XII distribution using lifetime percentile as quality parameter. The plan parameters such as acceptance number and group size are determined by considering producer¡¯s risk and consumer¡¯s risk at the same time. To find the plan parameters, we fixed the number of testers, experiment time and percentiles ratio. Many useful tables are generated for Burr type XII distribution as well as for log-logistic distribution. Two industrial examples are presented for the illustration of the proposed two-stage group sampling plan. Comparison of proposed plan with single-stage group plan is also discussed. Generally, the proposed two-stage sampling plan needs less number of test items than single-stage group plan does.
%K Two Stage Group Plans
%K Life Tests
%K Percentile Life
%K Burr Type XII Distributions
%K Producer and Consumer Risks
%U http://article.sapub.org/10.5923.j.ajms.20120203.04.html