In the movie the phrase "eat popcorn" can be recorded backwards or be hidden into the lines of characters or in the music. So yes this is possible that there was a subliminal message telling the viewers to buy more popcorn.
Answer: Perform experiments to test your hypothesis.
Explanation:
Experiments and hypotheses go hand-in-hand. Hypotheses, which are proposed explanations for scientific observations,
Experiments are designed based on the measurable variables defined in a given hypothesis.
