New Product Design Using Chebyshev’s Inequality Based Interval-Valued Intuitionistic Z-Fuzzy QFD Method

In Quality function deployment (QFD) approach, customers tend to express their needs in linguistic terms rather than exact numerical values and these generally contain vague imprecise information. To overcome this challenge use the method more effectively for complex customer-oriented design problems, paper introduces a novel intuitionistic Z-fuzzy QFD based on Chebyshev’s inequality (CI) applies it new product design. CI provides assignment of objective reliability function. The value is maximum probability obtained from CI. Then, expected lower upper bounds interval-valued fuzzy (IVIF) numbers are determined. A competitive analysis among our firm competitor firms an integrative different functions presented. proposed applied development hand sanitizer struggling with COVID-19.