High school students were interested in a teacher's claim that the longer the length of time (hours) that a student studies for a test, the higher the test score. The students collected the data and the teacher did the regression analysis with the following results. 
What is the coefficient of determination?
Definitions:
Delta Wave
A type of brain wave that is associated with deep sleep and is characterized by its low frequency and high amplitude.
EEG Pattern
A graphical representation of the electrical activity of the brain recorded during an electroencephalogram.
Deep Sleep
The stage of sleep in which brain waves slow down and recovery processes increase, important for memory and recovery.
Waking State
The period of consciousness when an individual is awake, characterized by awareness of the self and the environment.
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