What z scores separate the middle 60% of the scores from the outer 40% of the scores?

Question

z = -.25 and .25


z = -.84 and .84

z = -1.0 and 1.0

None of the above.

Answer 1

Thank you for posting your question!

In order to solve this one you want to use either a Z table or technology like Microsoft Excel in order to convert the given probabilities over into the Z score values. When I do that I find that the cutoff Z values on this one would be -0.84 and +0.84, so it would be the second choice out of this list.

I hope that helps! Feel free to reach out via message for a lesson if you have any additional questions beyond that! :)