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8. To estimate the proportion of college students who have Instagram accounts, Isabel surveys a random sample of 850 college students, and she finds that

8. To estimate the proportion of college students who have Instagram accounts, Isabel surveys a random sample of 850 college students, and she finds that 646 of these college students have Instagram accounts. If Isabel uses this information to construct a 99% confidence interval, what will the margin of error end up being? A. 0.001 B. 0.024 C. 0.015 D. 0.038 E. 0.046

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