Statistical hypothesis testing for dot-matrix type products
by Chanseok Park
International Journal of Quality Engineering and Technology (IJQET), Vol. 1, No. 1, 2009

Abstract: In this paper, we develop statistical hypothesis testing procedures for determining whether manufacturing processes of dot-matrix type products is considered to be currently passing its quality validation test. We provide a test statistic and a rejection region for a given Type I error probability for: 1) the case where the observed quality characteristic has a normal distribution; 2) the case where the observed quality characteristic has a uniform distribution. In addition to developing these hypothesis testing procedures, we also develop procedures for determining the sample size required for a specified Type II error probability. The proposed methods can be applied to a variety of products made up of identical components or items. Such products include candies in a box, light emitting diode (LED), traffic lights, charge coupled device (CCD) sensors, monitors, scanners, etc. Illustrative examples are provided.

Online publication date: Fri, 18-Dec-2009

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