The internal design of combinations (of -ed + noun)

Hi,
Do the given combinations have the internal design?
Does the noun in -ed+noun act as dominator?
Thank you for your help.

1. "educated speakers"----speaker having / with the abilities which is educated;
2. "educated hands"-----hands having / with the skill which is educated;
3. "educated taste"-----taste which befits one that is educated;
4. "an educated guess"----a guess based on the ability which is educated