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1.A 90% confidence interval is constructed in order to estimate the average number of hours college students spend studying per week.The resulting interval has a

1.A 90% confidence interval is constructed in order to estimate the average number of hours college students spend studying per week.The resulting interval has a margin of error of 3 hours. Which of the following could be the margin of error for a 95% confidence interval based on the same sample of data?

A.2 hours

B.3 hours

C.4 hours

D.8 hours

E.This cannot be answered without knowing the sample size.

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