Dr. Manquero has the hypothesis that ingesting chocolate prior to an exam will improve exam performance. She gives half of her participants chocolate and the other half gum - and then gives them an exam. In this experiment - which is the experimental group?

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Dr. Manquero has the hypothesis that ingesting chocolate prior to an exam will improve exam performance. She gives half of her participants chocolate and the other half gum - and then gives them an exam. In this experiment - which is the experimental group?