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Mathematics, 21.01.2021 03:30 alexussaniyah

A medical researcher says that at least 20% of U. S. adults are smokers. In a random sample of 2000 U. S. adults, 18.5% say that they are smokers. At a = 0.05, test the claim.

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A medical researcher says that at least 20% of U. S. adults are smokers. In a random sample of 2000...
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