QUESTION 3 Provide two examples (your own, not from the textbook) where you would think it would be appropriate to apply each of the following t-tests:
1) single sample t-test
2) two-sample t-test
3) paired-sample t-test

d? maybe

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.