Effects of Inspection Errors on Dorfman Screening Procedures with Random Group-Size: A Note on Kemp and Kemp's ‘Simple Inspection Scheme for Two Types of Defect’

Abstract

Kemp and Kemp have proposed a scheme of inspection for two types (A and B) of non-conformity. There is serial inspection for type A, continuing until a sequence of k successive As is observed. These k items are discarded, and all previous items (since the last inspection for A) are subject to a Dorfman group-screening inspection procedure for B. We develop formulae for the properties of this scheme, when inspection (for both A and B) may not be perfect, allowing for both false negatives and false positives. Some numerical values given by the formulae are presented, with a view to assessing the robustness of Kemp and Kemp's scheme.

Keywords:

• inspection error
• inspection scheme
• multi-type non-conformity

View correction statement:

Erratum: Simple Inspection Scheme for Two Types of Defect