This project is about the investigation of the different methodologies of decision-making, process of deliberation of the business decisions and an application of an analyzed decision for a dummy business set-up. The purpose of the research includes identifying an underlying business decision in a business case, exploring the assumptions occurring in the process of decision-making and how they influence the whole process, underpinning the requirements of a business decision-making process, applying a model simulation to a business in an industry of choice, exploring both controllable and non-controllable factors affecting business operations and how they fare in the decision-making process through Monte Carlo simulation, and demonstration of business-decision making technique in the process through regression.