It's been awhile since taking Prob. & Stats in college. My question is regarding which test to use in the following situation. I have two data sets that contain values regarding some testing/quality control procedure in a manufacturing process.
The first data set is when this particular testing/quality control procedure was being carried out by a human, while the second data set is when this same testing/quality control procedure was being done by a robot.
I would like to find out whether or not there is a significant relationship between these two data sets, using the t-test. A coworker had recommended the paired t-test, but as I am refreshing my knowledge on prob & stats, it seems like the 2-sample (independent) t-test would be more appropriate in this situation.
My question is basically: Which one should I use? The paired or the 2-sample t-test?