Chapter 6, Problem 28E

To determine

To find the IQ scores that could be considered to be unusually high.

Answer to Problem 28E

The IQ scores above 132 considered to be unusually high.

Explanation of Solution

Given:

  $\mu$ = 100

  $\sigma$ = 16

In general, the weight to be considered unusual if that weight below $\mu -2\sigma$ .

Therefore, $\mu +2\sigma =100+2\times 16=132$

Hence, the IQ scores above 132 considered to be unusually high.