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Posted by **chuckris** on Monday, April 11, 2011 at 8:57am.

Study Effect size N Tails

(a) Small 20 one

(b) Medium 20 one

(c) medium 30 one

(d) medium 30 two

(e) large 30 two

- statistics for the behavioral and social sciences -
**PsyDAG**, Monday, April 11, 2011 at 11:41amTry these:

http://www.google.com/search?client=safari&rls=en&q=t-test+power&ie=UTF-8&oe=UTF-8

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