Professor McCormick Decides to Test Her Hypothesis That Eating Chocolate

question 14

Multiple Choice

Professor McCormick decides to test her hypothesis that eating chocolate prior to exams increases students' test scores.She randomly assigns students to two groups at the beginning of the semester.One group receives a bar of chocolate before each test,while the other group receives another type of candy.She compares their scores at the end of the year,and finds that the students who ate the chocolate scored an average of ten points higher on their exams.What is a fair conclusion that can be drawn from this experiment?

• A)Eating chocolate causes students' test scores to increase.
• B)Eating chocolate is negatively correlated with students' test scores.
• C)Eating chocolate likely increases students' level of happiness.
• D)Eating chocolate increases general intelligence.

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Definitions:

Frontal Lobe

The frontal lobe is a region of the brain located at the front of each cerebral hemisphere, responsible for decision making, problem-solving, control of purposeful behaviors, consciousness, and emotions.

Phenotypic Plasticity

The ability of an organism to change its phenotype in response to changes in the environment, showcasing the flexibility in an organism's developmental pathways.

Dorsal

Pertaining to the back side of an organism or towards the spine, opposite of ventral.

Medial

Positioned in the middle or towards the central line of the body or an organ.