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A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course.The results are given below.Do the data suggest that the mean score after the course differs from the mean score before the course? Perform a paired t-test at the 5% significance level.
Drug Abuse
The harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs, leading to addiction or other negative outcomes.
Poverty
The state of having insufficient financial resources to meet basic living expenses, such as food, clothing, and housing.
Incest
Sexual relations between people classified as being too closely related to marry each other, considered a taboo and illegal in many societies.
Stepfathers
Male figures who are married to one's parent after the dissolution of the biological parents' marriage, not biologically related to the child.
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