a) There's an equally likely chance that a random boy will have had his birthday any number of days ago. So, it's equally likely that this number, for any random boy, will be 1 through 365. Is this a normal model?

b) Most randomly chosen boys will have a height around the same number. there's going to be a few really tall ones and a few really short ones, but most of them will be somewhere around the middle and it will be less and less likely as the height gets taller or shorter than this average. is this like a normal model?