2-1 Empirical Rule Introduction
IQ scores of 12 year olds are normally distributed with a mean of 100 and standard
deviation of 16. x ~ N(100, 16). Label the normal curve which represents these values.
Use the Empirical Rule to answer the following questions:
1.) What percent of 12 year olds have an IQ between 68 and 132 ?
2.) What percent of 12 year olds have an IQ that is less than 84 ?
3.) What percent of 12 year olds have an IQ that is greater than 132 ?
4.) What percent of 12 year olds have an IQ of greater than 100?
5.) What percent of 12 year olds have an IQ greater than 148 ?
6.) What percent of 12 year olds have an IQ between 84 and 116?
2-1 Empirical Rule Introduction