Scores on Standardized Intelligence Tests Are Normally Distributed with a Mean

Multiple Choice

Scores on standardized intelligence tests are normally distributed with a mean of 100 and a standard deviation of 15.This means that

A) 50% of the population scores between 70 and 100 on standardized intelligence tests.
B) only 5% of the population scores higher than 130 or lower than 70 on standardized intelligence tests.
C) only 5% of the population scores higher than 115 or lower than 85 on standardized intelligence tests.
D) 95% of the population scores between 100 and 130 on standardized intelligence tests.