If the percentage of scores falling between the mean and a z score of 0.30 is 11.79, then what is the percentage of scores falling between the mean and a z score of -0.30?
A) 11.79
B) -11.79
C) 38.21
D) -38.21

Question

Quizplus · Accepted Answer

The percentage of scores between the mean and a z score of -0.30 is the same as between the mean and a z score of 0.30 due to the symmetry of the normal distribution curve.

If the Percentage of Scores Falling Between the Mean and a Z