Question 277:

Asked on July 14, 2008

Tags: Z-Score

1

Answer:

No answer provided yet.

First, find the z-score corresponding to 90% of the area of the normal curve using the percentile to z-score calculator (select 1-sided) and you should get 1.2822. So you need to solve an equation to find what score gets you this z-score.

(195 - x)/30 = 1.2822

195-x = 38.46

156.54 = x

So the minimum score would be 157 rounding up to the nearest integer.