algebra question can you please help thanks?
on a standardized test range from 20 to 80. for a certain population of students, the mean is 52 and the standard deviation is 9. presuming the scores reflect a normal distribution, what would a score in the 84th percentile be? what score would be in the 97th percentile?
- Julius NLv 78 years agoFavorite Answer
P (x < 60.9501) = P (z < 0.9945) = 0.84
P (x < 68.9271) = P (z < 1.8808) = 0.97