A researcher gathers a random sample of people to see if a new test-taking strategy will change scores on class exams. She chooses an SAT mathematics exam and gives it to a set of test-takers. During the next week, the researcher hosts test-taking strategy seminars that all of the test takers attend. The same people then take a highly similar SAT exam. The average difference between the pre- and post-tests was a 6-point increase from Time 1 to Time 2. The researcher used an (alpha) = .05. The inferential test-statistic (the calculated result) was: t(999) = 13.49, p < .05.

Which type of inferential test did the researcher conduct?

options

One sample z-test

One-sample t-test

Independent Samples t-test

Paired (related, dependent) Samples t-test