A study on the effects of acid rain on trees in the Hopkins Forest shows that 25 of 100 trees sampled exhibited some sort of damage from acid rain. This rate seemed to the higher than the 15% quoted in a recent Environmetrics article on the average proportion of damaged trees in the Northeast. If we assume that the 15% value from the Envirnometrics article is true, what is the distribution of the proportion of damaged trees in a sample of size 100?