A San Jose State Student Collects Data from 20 Students

question 10

Essay

A San Jose State student collects data from 20 students. He compares the number of classes a student is enrolled in to their GPA. Here are the results of the regression analysis. The conditions for inference are satisfied.
Simple linear regression results: Dependent Variable: GPA Sample size: 20
R-sq = 0.26753742 s: 0.45747


$\begin{array}{|l|r|r|r|r|}\hline\text{ Coefficient } &\text{ Estimate } &\text{ Std. Err. } &\text { T-Stat } &\text { P-Value } \\\hline \text { Constant }& 3.4246 & 0.16580 & 20.654 & <0.0001 \\\hline \text { No. of Classes} & -0.13940 & 0.054369 & -2.5641 & 0.0195 \\\hline\end{array}$

-Find and interpret a 95% confidence interval for the slope of the regression equation.

---

Definitions:

Neurotransmitters

Chemical substances in the nervous system that transmit signals across synapses from one neuron to another.

Personality

The unique and relatively stable pattern of thoughts, feelings, and behaviors that characterizes an individual.

Psychosurgery

involves surgical interventions on the brain to treat mental disorders or alleviate severe psychological distress.

Brain Principles

Fundamental concepts or theories that describe and explain the functioning of the brain, along with its processes and mechanisms.