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March 1, 2015

March 1, 2015

Posted by **Anonymous** on Sunday, July 18, 2010 at 6:50pm.

i think df is sample size -1 .

we usually use approx value but to use exact value how to use t score table.

and how we conclude whether it is two tailed test or one tailed test .

(i f the problem asks for exact increase or decrease ,is it one tailed test ,i guess so ,)

please clarify my doubts

- t test -
**PsyDAG**, Monday, July 19, 2010 at 8:45amPlease only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.

See your later post.

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