The spelling of the word "studer" can be a bit confusing. Its correct pronunciation is /ˈstuːdər/. The reason why it's spelled with an "e" in the final syllable is that it's derived from the German word "Student", which is pronounced with an "e" sound at the end of the syllable. In English, this final "e" is often silent, as in the words "love" or "bake", but in the case of "studer", it's pronounced as a schwa sound. So, remember to place emphasis on the final syllable when saying "studer".