A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Canada. A scale called the Antisocial Beliefs Scale is given to all juvenile delinquents. The mean (μ) of the scale is 71 and the standard deviation (σ) is 5.
Assuming that the scores are normally distributed, what PERCENTAGE of the population falls between 81 and 66?
1 answer
Same process as following post from Alecia.