This document discusses problem definition, hypothesis formulation, and different types of research questions and hypotheses. It defines a research problem as a gap between the actual and desired state. Key points made include: - Research problems are clearly defined questions or issues to investigate. - Hypotheses make assumptions about relationships between variables and show the direction of research. - There are descriptive, relational, directional/non-directional, and null/alternative hypotheses. Relational hypotheses examine correlations or causal relationships between variables.