Question

If Jeremy is in the 90th percentile in the main office test scores is 180 with a standard deviation of 15 which of the following scores with Jeremy most likely get on a standardized test 249, 180, 199, or 210?

Answer 1

199. 

the z score for the 90th percentile is 1.28, so you can solve the equation

$\frac{x-180}{15} = 1.28$

which gets you the 199