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3. A recent survey asked college freshmen to correctly identify as many U.S. Supreme Court justices as possible. Of the 816 students who responded to

3. A recent survey asked college freshmen to correctly identify as many U.S. Supreme Court justices as possible. Of the 816 students who responded to this survey, the mean number of justices correctly identified was 1.81 with a standard deviation of 1.98. A. What is the standard error of this mean estimate? B. Using the +2 shortcut, calculate the 95% CI

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