Final answer:
Police officers determine if a crime is not about a robbery gone bad by examining the evidence at the crime scene and considering witness statements.
Step-by-step explanation:
Police officers determine that a crime is not about a robbery gone bad by examining the evidence at the crime scene. They look for signs and clues that indicate a different motive or scenario. For example, if there is no evidence of forced entry or if valuable items were left untouched, it suggests that the crime was not a robbery. Additionally, witness statements and interviews may provide information that contradicts the idea of a robbery gone bad, leading police to explore other possibilities.