149 - 95 = 54 ... 54 / 18 = 3
what percentage of values is at least 3 standard deviations above the mean?
Suppose that IQ scores have a bell-shaped distribution with a mean of 95
95
and a standard deviation of 18
18
. Using the empirical rule, what percentage of IQ scores are at least 149
149
? Please do not round your answer.
3 answers
Answer: 15%
99.7%
1 answer