Asked by Joi

X is normally distributed with a mean of 250 and a standard deviation of 40. What value of X does only the top 15% exceed?
Answered by PsyDAG
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion and get its Z score. Insert values into equation above and solve for the score.
Answered by Anonymous
112.8
There are no AI answers yet. The ability to request AI answers is coming soon!