Relationship between the confidence interval and the p value

Jian, Wang; Bi, Jiefeng

doi:10.12988/ams.2017.76193

ams

2017

DOI: 10.12988/ams.2017.76193

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Relationship between the confidence interval and the p value

Wang Jian¹,

Jiefeng Bi²

Abstract: Based on the calculation formulas of confidence intervals for different medical indexes, in this paper, by using the backward-deduction method of mathematics and combining with the knowledge of mathematical statistics, a method of obtaining the accurate p value from the confidence interval is given.

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Improvement of production process capability — a case study of two furniture companies

Sujová

Simanová

2021

Engineering Management in Production and Services

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The article aims to assess the improvement of the process capability by implementing the Six Sigma methodology in furniture enterprises with different levels of the quality management system (QMS) and ownership. The implementation of the Six Sigma methodology according to the DMAIC steps, also analysis, evaluation, and comparison of the implementation results were performed to improve the process performance. The implementation of the Six Sigma methodology was carried out in an international enterprise with foreign capital and a certified Quality Management System (QMS) and in a domestic enterprise with purely domestic capital without an established Quality Management System. The implementation results confirmed the positive development in the key indicators of critical processes, namely, in the reduction of DPMO, the increase of efficiency and the level of Sigma Process, and the values of process capability indices. The positive effects were more pronounced in the international enterprise compared to the domestic. The application of the Six Sigma methodology brings better results in manufacturing companies with international management skills and implemented certified QMS. These two aspects can be key success factors by managing and improving process capability. The practical contribution of the paper can be seen in the proposal of suitable methods and tools by implementing Six Sigma conception in furniture manufacturing regardless of the ownership or level of quality management systems.

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Improvement of production process capability — a case study of two furniture companies

Sujová

Simanová

2021

Engineering Management in Production and Services

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Implementation of the Six Sigma Methodology in Increasing the Capability of Processes in the Company of the Furniture Industry of the Slovak Republic

Simanová

Gejdoš

2020

Management Systems in Production Engineering

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The aim of the article is to present the results of a case study focused on the implementation of the Six Sigma methodology in order to improve the quality and increase the efficiency of furniture production processes. Positive results of implementation after the implementation of corrective measures were achieved in the values of process capability coefficients, reduction of nonconformities and subsequent reduction of DPMO, increase of the values of the level of efficiency and sigma of the critical process.In the processing of the results, classical methods of research work were used such as analysis, synthesis, comparison, descriptive statistics, coefficients Cp a Cpk, DPMO, level of efficienty and sigma, and also graphic methods.

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Relationship between the confidence interval and the p value

Cited by 2 publications

References 1 publication

Improvement of production process capability — a case study of two furniture companies

Improvement of production process capability — a case study of two furniture companies

Implementation of the Six Sigma Methodology in Increasing the Capability of Processes in the Company of the Furniture Industry of the Slovak Republic

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