MathStatistics
posted by jason .
For a standard normal curve, find the zscore that separates the bottom 90% from the top 10%.

In the back of your statistics text, there is a table labeled something like "areas under the normal distribution." Look for the portion values for the larger or smaller portion to get your Z score.
I hope this helps.
Respond to this Question
Similar Questions

statistics
for a standard normal curve, find the zscore that separates the bottom 30% from the top 70% 
statistics
1.On a test the mean is 75 and the standard deviation is 5. A. What is the probability that a randomly selected score is higher than 80? 
statistics
In a normal distribution with the mean being 500 and the standard deviation being 100, what raw score separates the top 40% of a distribution from the rest? 
statistics
In a normal distribution with the mean being 500 and the standard deviation being 100, what raw score separates the top 40% of a distribution from the rest? 
Math help
We have no ideal on how to start this problem, we have look for it on the charts, did not see. Please help Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area … 
Math help
We have no ideal on how to start this problem, we have look for it on the charts, did not see. Please help Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area … 
Statistics help
Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3989. (b) Find the standard score (z) such that the … 
Math/Statistics
A statistics teacher believes that the final exam grade for her elementary stats class have a normal distribution with a mean of 82 and a standard deviation on 8. Find the score which separates the top 10% of the scores from the lowest … 
Stats
Find the score that separates the top 75% from the bottom 25% if the Mean is 100 and the Standard deviation is 15 
Statistics
If a teacher is grading on a curve, the median is 78 and the standard deviation is 9.6, how do i find out the ranges for grades?