Find the z-score for which 12% of the distribution area lies between -z and z

in Statistics Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Using the normal distribution table we have to find out the value of z corresponding to P where P-(1-P)=0.12. This means graphically that we look at the small and large portions of the distribution (areas under the curve) and take the smaller from the larger so that the resultant area is 12% or 0.12. So 2P-1=0.12, and P=1.12/2=0.56. If we look up 0.56 in the body of the table we find the z score is about 0.15.

by Top Rated User (788k points)

Related questions

Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,442 questions
90,977 answers
103,504 users