Question 754633
If I use the fourmula: z= x-u/standard deviation with the given numbers x=35, u=37.2, and standard deviation of 2.5 I get -.88

So- how do I look up z=-.88?

here is a web reference for negative z value table

http://easycalculation.com/statistics/negative-z-score-chart.php

using the negative z-value table

-.88 is .1894 or 19%