You've come across a very old article in the college archives in which a researcher reported that the mean IQ of freshmen at College X was 120. In those days, every student's IQ was measured as they started at College X. That's the only statistic in the article. You wonder whether the IQ of freshmen at College X is different today, so you test the IQ of a sample of freshmen and compare it to the mean IQ of the population described in the publication using which statistical test? 1. dependent/related/paired-samples t test 2. single-sample t test 3. independent-samples t test 4. z test