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September 19, 2014

Homework Help: statistics

Posted by Anonymous on Friday, December 6, 2013 at 3:39pm.

Nine students took the SAT. Their scores are listed below. Later on, they read a book on test preparation and retook the SAT. Their new scores are listed below. Construct a 95% confidence interval for d (the true mean difference in scores). Assume that the distribution is normally distributed.

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