I'm working on a problem for "Inferences about the difference between two population means for independent samples: sigma 1 & 2 unknown and unequal."
The final value of "test statistic t" falls in the rejection region for 95% confidence interval, but falls in the nonrejection region for 99% confidence interval.
Should I perform additional calculations before rejecting my null hypothesis?
posted by iamcharity
on Jul 1, 2013 -
Is there a formula or process to determine how many questions should be on an exam? Given a test bank of "x" number of questions, what "y" number of randomly selected questions constitutes a valid sample? [more inside]
posted by angiep
on Dec 2, 2008 -