For the overall population, the IQ scores follow the unimodal, symmetric distrib
ID: 3428523 • Letter: F
Question
For the overall population, the IQ scores follow the unimodal, symmetric distribution with mean equal to 100 and variance equal to 225.
What is the best answer? (Hint: Use empirical rule)
Select one:
A. If you pick a person at random, the chance that his IQ falls between 100 to 115 is more than the chance that his IQ falls between 60-85.
B. If you pick a person at random, the chance that his IQ falls between 100 to 115 is less than the chance that his IQ falls between 65 to 80.
C. If you pick a person at random, the chance that his IQ falls between 100 to 115 is not comparable to his IQ falling between 60-85.
D. If you pick a person at random, the chance that his IQ falls between 100 to 115 is as compared to falling between 65 to 80 depends on the number of the outliers.
Explanation / Answer
A. If you pick a person at random, the chance that his IQ falls between 100 to 115 is more than the chance that his IQ falls between 60-85.