[BarTopDancer]

Thanks Alex.

I don't want the answers to be handed to me(thank you). I want to understand so I can get the answers on my own (important for the tests).

I used a formula in the book following the Empirical Rule for the third standard deviation. I obviously didn't understand it correctly.

My original thought was A (between 74 and 86) because it has only 1 standard deviation. But the 2 points per question threw me off.

For part 2, I over thought the question. That is one of my challenges - over thinking these things.

Ultimately I would not expect a student to score 50 points on the exam. Even with the standard deviation of 6 points, the mean is high enough to expect students will score above 50 points.