A psychologist is interested in whether hypnosis affects brain dominance. Twelve college students from the freshmen class are randomly sampled for an experiment. The experiment has two conditions which are given on different days. In condition 1, the students are hypnotized and then given a test which measures the relative dominance of the right and left hemispheres. The higher the score, the more dominant is the right hemisphere. In condition 2, the same students are given the test again, only this time they are not hypnotized but are in their normal state of consciousness. The following scores are obtained. 
Definitions:
Contagious
The characteristic of a disease that allows it to be transmitted from one individual to another through direct or indirect contact.
Sebaceous Glands
Small oil-producing glands located in the skin of mammals that secrete sebum, which lubricates the skin and hair.
Sebum
An oily substance produced by sebaceous glands.
Bacteria
Microscopic single-celled organisms that inhabit virtually all environments, including soil, water, organic matter, and the bodies of plants and animals.
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