Posted by **Chloe** on Sunday, August 3, 2014 at 11:32am.

DO I NEED TO USE 2-TAILED OR 2-TAILED RESULTS? WHY?

A researcher believed that 2 hours per week of intensive exercise would result in significant weight loss after 12 weeks on the schedule. Accordingly, he weighed a group of 50 subjects before and after the 12 week exercise period.

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