Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 14. Use the empirical rule to determine the following. ​(a) What percentage of people has an IQ...



Scores of an IQ test have a​ bell-shaped distribution with a mean of

100


and a standard deviation of
14.

Use the empirical rule to determine the following.

​(a) What percentage of people has an IQ score between
72
and
128​?


​(b) What percentage of people has an IQ score less than
72
or greater than
128​?


​(c) What percentage of people has an IQ score greater than
128​?




Jun 09, 2022
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