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When using a correlated-groups t-test,df =
Hormones
Chemical substances produced in the body that regulate the activity of cells or organs.
Psychologists
Professionals who study mental processes and behavior in humans and animals.
Neurotransmitters
Chemical messengers that transmit signals across a chemical synapse, from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.
Medulla
The lower part of the brainstem, controlling essential life-sustaining functions such as breathing, heart rate, and blood pressure.
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