With IQ scores with a mean of 100 and a standard deviation of 15, what is the range of scores between which 95% of people should score?
A) 100 and 130
B) 85 and 115
C) 70 and 100
D) 70 and 130

Question

Quizplus · Accepted Answer

The range for 95% of a normally distributed population is within two standard deviations from the mean. For an IQ score with a mean of 100 and a standard deviation of 15, this range is 100 ± 2(15), which is 70 to 130.

With IQ Scores with a Mean of 100 and a Standard