Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are no more than 46?

Question

Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 17.  Using the empirical rule, what percentage of IQ scores are no more than 46?

R_scott · Answer

46 is three standard deviations below the mean approx. 0.13% of the scores are at or below this point

Drew · Answer

Correct answer is approximately 0.15% of IQ scores are no more than 46.