They have proved that they can solve a statistics problem, but now for the more important question. This is really a test to see how much TV they have been watching while they were supposed to be studying. Looks like they have a good homework/TV life balance going on.
Well, this question certainly went in another direction. While the answer is important, you know what is more important? Seeing your student's drawing of a dinosaur wearing spectacles and holding a pen.
If someone under the age of 25 got this right, they deserve all the points. And their parents deserve some extra credit for raising them right. Now you are going to have this song stuck in your head all day. You're welcome.