Given that on one section of the SAT the mean is 500 and the standard deviation is 100,what is the approximate probability of a student scoring 400 or higher on the test?
A).84
B).50
C).16
D).34

Question

Quizplus · Accepted Answer

The score of 400 is one standard deviation below the mean (500 - 100 = 400). Approximately 84% of the data in a normal distribution lies above one standard deviation below the mean.

Given That on One Section of the SAT the Mean