This study applied t-distribution statistical analysis to evaluate the quality of electrical cables produced in Lagos metropolitan city, Nigeria, with a focus on the standard conductor resistance and sample resistance. The aim of this work is to determine the conformity of thecables produced in Lagos to established standards and identify areas for improvement in the production process. The population mean and standard deviation of the sample data were estimated. These metrics were employed in evaluating the level of compliance of the sample resistance values obtained against the Nigeria Industrial Standard/International Electrotechnical Commission (NIS/IEC) standard resistance of the cable sizes. The t-tests were conducted at two different confidence levels: 90% and 95%. The findings from the outcome of the cable samples indicated that the overall resistance values complied with the laid down industry requirements. This means that quality assurance and quality control policies implemented in the production of the products are adequate in guaranteeing quality, reliability, and safety of the products. The t-tests confirmed adherence of the sample resistances to the population mean on which cable samples with considerable deviations were flagged. An average of 4 was obtained as the conformity measurements meaning that slight deviation exists in the values of resistance. Such variations indicate areas requiring improvement to enhance the standardization and quality utilized in the manufacturing line. Electricity cables produced in Lagos have good compliance with the quality measures in its production as depicted in the standard procedures, however, the need to constantly assess and update the manufacturing processes in a bid to meet and improve on the required product quality is important.
