Ten Students in a Graduate Program at the University of Toronto

question 28

Multiple Choice

Ten students in a graduate program at the University of Toronto were randomly selected.Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0.The students' GPAs on entering the program and their current GPAs were recorded.Use the regression analysis provided below to find a 95% confidence interval for the slope of the regression line. Dependent variable is: Current GPA
R-squared = 0.001849
S = 0.1452 with 10 - 2 = 8 degrees of freedom $$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { SE(Coeff) } & \text { t-ratio } & \text { P-value } \\\text { Constant } & 3.674375 & 0.95089 & 3.864144 & 0.004781 \\\text { Entering GPA } & 0.03125 & 0.256697 & 0.121739 & 0.906108\end{array}$$

• A)(-0.45,0.51)
• B)(-0.83,0.89)
• C)(-0.56,0.62)
• D)(1.48,5.87)
• E)(-0.44,0.50)

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Definitions:

Physical Dependence

A physiological state where the body adapts to a substance, leading to withdrawal symptoms when that substance is reduced or stopped.

Withdrawal Symptoms

The unpleasant physical or psychological reactions that occur after ceasing or reducing intake of a substance that the body has become dependent on.

Hallucinogen Persisting Perception Disorder (HPPD)

A condition characterized by the re-experiencing of perceptual distortions or hallucinations previously encountered during hallucinogen use.

LSD

A powerful psychedelic drug known for altering perception, mood, and a variety of cognitive processes.