You must first understand the key difference between a hypothesis and a theory. A hypothesis is an assumption that is made in order to test its logical consequences. A theory is the result of a hypothesis that has been tested extensively. Theories are widely accepted, while hypotheses are speculative.
Examine the information at hand to determine if it is a theory or a hypothesis. If it contains extensive information that is complex and detailed, it is a theory. If it contains primarily assumed information, it is a hypothesis.
If possible, research the topic at hand to see if there is more information available. A hypothesis is a new idea that is still being tested, whereas a theory will have more of a developed answer.