Talk:Statistics/Testing Data/t-tests

I added a practice problem. Just doing my part to help out this book, since I'm taking statistics right now in high school. 65.35.3.81 21:34, 10 Feb 2005 (UTC)

this is wrong
In fact the t-test is not a small-sample test; it is used when samples are large but the population variance is unknown. Any statistics text will tell you this.