Final answer:
Accurately determining the internal temperature of a deceased human body after 6.5 hours requires additional information and would typically involve a forensic investigation.
Step-by-step explanation:
The question is asking about the expected internal temperature of a human body after being dead for 6.5 hours. The normal human body temperature is usually around 37.0°C when alive. Over time, the internal temperature of a deceased body will drop, depending on the surrounding environment, until it reaches ambient temperature. However, estimating the precise temperature after a specific time such as 6.5 hours without additional information, such as the ambient temperature and the body's initial condition, is not practical. Therefore, a proper investigation, such as one conducted by a professional in forensic medicine, would be necessary to determine the internal temperature accurately.