Asked by marie
                the random variable x is normally distributed with a mean of 75 and a standard deviation of 15.0. For this distribution, what is the twenty-third percentile?
            
            
        Answers
                    Answered by
            drwls
            
    23% of the population is below x = 64, if that is what you mean.
See http://psych.colorado.edu/~mcclella/java/normal/accurateNormal.html
for how I got that.
    
See http://psych.colorado.edu/~mcclella/java/normal/accurateNormal.html
for how I got that.
                    Answered by
            PsyDAG
            
    Z = (score-mean)/SD
If you do not have a computer available, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion to help you find the above Z score and then the specific score.
    
If you do not have a computer available, find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion to help you find the above Z score and then the specific score.
                                                    There are no AI answers yet. The ability to request AI answers is coming soon!
                                            
                Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.