Abstract
The main factor that conditions the success of organizations is the development of products oriented toward customer satisfaction. An additional attribute of organizations is the use of sustainable development rules. The use of these rules and the simultaneous desire to create high-quality products encourage organizations to apply different methods to, for example, eliminate waste. This study aimed to develop a method to determine the research sample size required to predict a product’s quality level, taking into account current customers’ expectations. This method was developed by modifying a procedure to determine the research sample size as part of the calculated estimator of the mean value in the general population. Based on the concept of product sustainability development, the goal of the developed method was to determine the number of potential customers (respondents) needed to provide product requirements, which were then processed and used to predict the quality level of the product. This method was applied to simultaneously test a number of hypotheses, determine the test power, and detect statistically significant differences for several relationships of the sample sizes and the test power. This was achieved using universal hypotheses and the popular alternative-punctual (MAP) method. Testing of the proposed method showed that it was able to predict the quality level of products based on current expectations of customers.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
As shown in this paper, a single consistent method is lacking for the determination of the number of customers from whom expectations should be obtained, for processing and subsequent prediction of the product quality level
The aim of the article was to propose a method to determine the research sample size required to predict the product quality level while taking into account current customer expectations. This approach resulted from modification of the method for determining the size of the research sample, helping organizations to achieve sustainable development and maximize product quality
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Due to dynamic technological changes and a competitive environment, the development of products oriented toward customers is a growing trend in the production field [1,2,3,4]. This orientation includes customer expectations to ensure a satisfactory level of product quality. Mentioned product quality level is referred to the compatibility of product with customers’ requirements and it concerns only concrete intended use of the product
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