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

how to know exact t value using sample standard deviation and sample mean and sample size

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

## Answer this Question

## Related Questions

- statistics t test - how to know exact t value using sample standard deviation ...
- statistics - 1. A random sample of size 49 is taken from a large population, ...
- statistics - A random sample of size 49 is taken from a large population, ...
- Statistics - Kind attention Psydag: A random sample of size 20 from a normal ...
- statistics - what are the mean and standard deviation of a sampling distribution...
- statistics - Given a sample size of 38, with sample mean 660.3 and sample ...
- Statistics - A normal population has an expected value of 60 and a variance of ...
- 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 - historically, the average customer spends $8.53 for all TGP ...