Sunday

January 25, 2015

January 25, 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.

**Answer this Question**

**Related Questions**

statistics t test - how to know exact t value using sample standard deviation ...

Statistics - An IQ test is designed so that the mean is 100 and the standard ...

statistics - An IQ is designed so that the mean is 100 and the standard ...

statistics - what are the mean and standard deviation of a sampling distribution...

STAT - You want to determine if your widgets from machine 1 are the same as ...

Statistics - Kind attention Psydag: A random sample of size 20 from a normal ...

Statistics - . A random sample is selected from a normal population with a mean ...

Probabilty & Statistic - A random sample is selected from a normal population ...

Statistics: Sample Size, Variance and Standard Dev - Sample Size, Variance and ...

Statistics - SAT scores are normally distributed with a mean of 500 and a ...