Suppose that IQ scores have a bell-shaped distribution with a mean of 95 and a standard deviation of 16 . Using the empirical rule, what percentage of IQ scores are between 79 and 111 ?

Answer 1

68% are between 79 and 111. 95 +/- 16

68% are within 1 standard deviation of the mean, by the empirical rule. 68-95-99.7