is there a rule to determine the minimum sample size for a t-test to be valid? can an unpaired t-test be used why use t-test? what is the minimum t test size what is the minimum t-test size what is the sample size for using a t test what is the sample size for t-test why not use t-test why would you use t tests instead of parametric tests can a t-test be used which of the following is an example of a t test being performed in a nonparametric test in order to determine the minimum sample size? can a t test be used what is minimum sampling size for t-test what is the sample size requirement? minimum sample size can a t test be used? how to determine a sample size for a ttest and why what is the minimum sample size for a t-test why use an unpaired t test which is the minimum sample size for an unpaired test?