Question 81:

Asked on February 10, 2008

1

Answer:

No answer provided yet.Use the Percentile to Z calculator and enter .90 (90 percent). The other piece of information you need is whether it is a one or two-side z-score. When in doubt, use 2 sided, as the link above does. See the Interactive Graph of the Standard Normal Curve for a visual representation of the difference between one and two-sided z-scores.