Optimal design of repetitive group sampling plans for Weibull and gamma distributions with applications and comparison to the Birnbaum–Saunders distribution. Issue 14 (26th October 2018)

• Record Type: Journal Article
• Authors: Balamurali, S.; Jeyadurga, P.; Usha, M.
• Is Part Of: Journal of applied statistics. Volume 45:Issue 14(2018)
• Page Start: 2499
• Page End: 2520
• Publication Date: 2018-10-26
• Subjects: Acceptable quality level -- average sample number -- life test -- limiting quality level -- mean lifetime ratio; Statistics -- Periodicals; 519.5
• DOI: 10.1080/02664763.2018.1426740
• Languages: English
• ISSNs: 0266-4763

Abstract

ABSTRACT: In this paper, we propose a multiple deferred state repetitive group sampling plan which is a new sampling plan developed by incorporating the features of both multiple deferred state sampling plan and repetitive group sampling plan, for assuring Weibull or gamma distributed mean life of the products. The quality of the product is represented by the ratio of true mean life and specified mean life of the products. Two points on the operating characteristic curve approach is used to determine the optimal parameters of the proposed plan. The plan parameters are determined by formulating an optimization problem for various combinations of producer's risk and consumer's risk for both distributions. The sensitivity analysis of the proposed plan is discussed. The implementation of the proposed plan is explained using real-life data and simulated data. The proposed plan under Weibull distribution is compared with the existing sampling plans. The average sample number (ASN) of the proposed plan and failure probability of the product are obtained under Weibull, gamma and Birnbaum–Saunders distributions for a specified value of shape parameter and compared with each other. In addition, a comparative study is made between the ASN of the proposed plan under Weibull and gamma distributions.