Difference between raster subsets as defined by another raster

I wish to determine whether there is a relationship between slope and the Corine land cover class pastures. i.e. whether areas defined as pasture have a different slope to non-pasture areas.

I've tried some of the statistics tools in Arc but haven't had any success. Thus far I've:

1. Extracted the pastures land cover class from the Corine raster


2. Created a binary raster of pastures (pasture = 1, not pastures = 0)

How do I compare those slopes categorised as pasture and those that are non-pasture?

Has anybody calculated anything similar? Thanks