A new drug is supposed to be effective in reducing motion sickness in people who are prone to such illness. A group of subjects are given a placebo and taken for a ride in a car over a preplanned route. At the end of the trip the subjects are asked to rate their illness on a 20-point scale. A week later the same subjects are given the new drug and taken for an identical ride and asked to rate their degree of illness again. The data are: 
Definitions:
Socioeconomic Status
A measure that combines income level, education, and occupational prestige to categorize individuals or groups.
Life Expectancy
The average number of years an individual is expected to live, based on statistical averages, taking into account factors like current age, gender, and health conditions.
Chronic Illnesses
Long-standing, persistent health conditions that typically require ongoing medical attention or limit activities of daily living.
Diabetes
A chronic metabolic disease characterized by high blood sugar levels, resulting from either insufficient insulin production or the body's inability to effectively use insulin.
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