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Mathematics, 05.05.2020 18:42 atwhitlock7094
In 1990, 1000 adults were randomly selected and each was asked if they smoked, 300
answered yes. In 2000, same question was asked to 2000 adults, 500 answered yes.
Assuming two samples are independent. Is there evidence that the proportion of smokers
was higher in 1990 than in 2000? Test at a = .05.
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In 1990, 1000 adults were randomly selected and each was asked if they smoked, 300
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