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12 questions from this quiz
Population
Around 1000 people
Fraction of sample with characteristic
True fraction in entire population
How much sample may differ from truth
E=1nE = \frac{1}{\sqrt{n}}E=n1
0.05 or 5%
1600
Quadruple it
0.29
Method works correctly 95% of time
0.115 to 0.205
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