The IQs of a population are normally distributed with a mean of 100 and a standard deviation of 15. If a person is selected at random, what is the probability that his/her IQ is: a) more than 115; b) between 95 and 101; c) at most 92 ; d) less than 92 or more 108 than ; e) exactly 84; f) exactly 84 or 100; g) not 99; h) at least 113.