Statistics
posted by Anonymous .
In twosample testing, when is it appropriate to use a t test or a z test

Statistics 
PsyDAG
I searched Google under the key words "Z test and t test" to get these possible sources:
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In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
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