Decision making models with fuzzy values

Quality decision-making is currently one of the most important managerial activities of each enterprise. Every day decisions differ only by their importance and complexity. Companies are facing strong competitive environment on their markets and they meet with problems based on uncertainty of information during decision-making processes. The problem is how to express or use obtained knowledge and information. The key element of ability how to make quality decision is to find the way how to work with uncertainty. Crossing the border between certainty and uncertainty, it moves our decisions on higher level and gives us key competitive advantage. In our contribution we will demonstrate decision-making process based on fuzzy information. Fuzzy decision model (game against nature) will be used for the choice of the best decision for the following real problem: Management has to decide if implement ISO 9001 (Quality management system) and/or implement ISO 14001 (Environmental Management Systems). Model contains crisp alternatives, fuzzy states of nature and payoff of possible alternatives.