A social science teacher wants to compare the perception of students towards activism before and after joining a public demonstration. She believes that joining the event will affect their perception negatively. The tool she uses in both cases is a survey profile that gives a score to a person's perception. (It assigns a positive score if the student is open to the idea and assigns a negative score otherwise). At x = 0.05, what conclusions can we make for the collected data? Use p-value method.

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