The integrated model is a new model that is recently developed to decrease from the classical approach weaknesses and problems in building the management information systems (MIS’s) that are used to solve the management problems in the practical life. The use of this integrated model needs to be tested, to prove how efficiently and successfully the model works. To achieving this objective, this paper uses the mathematical probability theories to implement an internal test of the integrated model work before using it in the practical life. The paper uses the qualitative research method in its methodologies.