Explanation: I am sure you missed an extra 10 in your problem. There are supposed to be four 10's (Well at least in my problem). The rest you know, the answer are stated for the set of data: 10, 1, 10, 15, 1, 7, 10, 10, 1, 6, 13.
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.
