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A research company frequently monitors trends in the use of social media by American Adults. The results of one survey of 1846 randomly selected adults looked at social media use versus age group. The table summarizes the survey results.
-What is the marginal distribution of age groups?
Lewis Tappan
A prominent 19th-century abolitionist and a founder of the American Anti-Slavery Society who also played a key role in the Amistad case.
Colonization Society
A group or organization established in the early 19th century advocating for the migration of free African Americans to Africa; the American Colonization Society is a prime example.
William Lloyd Garrison
An American abolitionist who was prominent in the anti-slavery movement and is well known for founding and editing the abolitionist newspaper "The Liberator."
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