Aptitude Test Scores
Two random samples of 40 students were drawn independently from two populations of students.Assume their aptitude tests are normally distributed (total points = 100).The following statistics regarding their scores in an aptitude test were obtained: 
.
-{Aptitude Test Scores Narrative} Estimate with 95% confidence the difference between the two population means.
Definitions:
Brain Abnormalities
Structural or functional deviations from the normal brain anatomy or physiology that can lead to various neurological or psychological conditions.
Tumors And Strokes
Medical conditions where tumors refer to abnormal growths of tissue and strokes are events causing damage to the brain due to interruptions in its blood supply.
Intelligence Tests
Standardized assessments designed to measure human intelligence.
Middle-Class Educated
Refers to individuals who have obtained a level of education that is typical of the middle class, often implying a degree of socioeconomic status.
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