- #1

60051

- 16

- 0

## Homework Statement

Students who are in the top 16% and top 2.5% will graduate with special honours. Where should the limits be set in terms of z-scores?

Mean (xbar) = 2.7

Standard deviation (s) = 0.5

## Homework Equations

z = x - xbar / s

and

-1 to 1 = 68% of all grades

-2 to 2 = 95% of all grades

-3 to 3 = 99.7% of all grades

(don't know if that's ^ relevant)

## The Attempt at a Solution

I tried multiplying 3 (the highest z score) by 0.84 (100 - 16) but that didn't seem to work. I know there's one thing I have to do before I use the z-score formula, but it's just not clicking.