So the appropriate test is the t-test, or z-test.
Here is what I have:
x numbers represent pre-training.
y numbers represent post-training.
Sx = 82
Mx = 9.11
Sx^2 = 24.11
Sy = 66
My = 7.33
Sy^2 = 20.75
After calculating the square root of Sx^2 and Sy^2, I obtain t = 0.16, which is statistically significant.
Am I on the right track?