Question
a normal distribution ha am ean of 80 with a standard deviation of 20. what score separates the highest 15% of the distribution from the rest of the score?
Answers
TutorCat
the formula of z-score:
z=(x-mu)/sigma
where mu=mean and sigma=standard deviation
find the z-score equivalent on the table that is equivalent to .85 to substitute back into equation and solve for x
z=(x-mu)/sigma
where mu=mean and sigma=standard deviation
find the z-score equivalent on the table that is equivalent to .85 to substitute back into equation and solve for x