Answer:
1. I would think it would be a appropriate to use a normal model to figure this out because sometimes when you are using stuff online you can get the same number like 20 times in a row, whereas, if you use a real dice, you most likely won't roll the same number 20 times.
2. { sorry two doesn't make sense }
Simply add the two dosages together, (0.15+0.025) and the answer is 0.175 :)
1/2 = 4/8
3/8 = 3/8
8 is the common denominator between these two fractions
