The Effect of Operational Performance on Competitive advantage of manufacturing firms: case study on Vita spring water factory in Dire Dawa Administration

Operational performance of manufacturing firms have become increasingly important as firms seek to obtain competitive advantage to dominate markets. The general objective of this research were to study the Effect of Operational Performance on Competitive advantage of manufacturing firms in case study on Vita spring water factory in Dire Dawa Administration. The specific objective of the study were determine the effect quality,cost,flexibility and delivery on competitive advantage of manufacturing firms. From 268 target populations of employees, 160 employees are selected as the sample of the study. Random sampling technique is used to select the sample from manufacturing firms . The survey data is analyzed with the help of SPSS software.