A note on some modified Pulak and Al-Sultan's model

Chung-Ho Chen

Journal of Applied Statistics, 2010, vol. 37, issue 3, 461-472

Abstract: Pulak and Al-Sultan presented a rectifying inspection plan applying in the determination of optimum process mean. However, they did not point out whether the non-conforming items in the sample of accepted lot are replaced or eliminated from the lot and neglected the quality loss within specification limits. In this paper, we further propose the modified Pulak and Al-Sultan model with quadratic quality loss function. There are four cases considered in the modified model: (1) the non-conforming items in the sample of accepted lot are neither replaced nor eliminated from the lot; (2) the non-conforming items in the sample of accepted lot are not replaced but are eliminated from the lot; (3) the non-conforming items in the sample of accepted lot are replaced by conforming ones; (4) the non-conforming items in the sample of accepted lot are replaced by non-inspected items. The numerical results and sensitivity analysis of parameters show that their solutions are slightly different.

Keywords: rectifying inspection plan; process mean; quadratic quality loss function; specification limits (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1080/02664760902729658

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