A mutawātir Hadith gives certain knowledge when its conditions are fulfilled. In the basic ruling considered here, mashhūr, ʿazīz and gharīb have a different degree of establishment1.
They are called ẓannī al-thubūt (ظنی الثبوت): the evidence makes the report's establishment more likely, giving a predominant probability, rather than the certainty of mutawātir transmission. This degree of knowledge is called ʿilm al-ẓann (علمِ ظن).
Here, ẓann does not mean a baseless guess or ill suspicion.
1. Thubūt (ثبوت): here, establishing that a report really comes from the person to whom it is attributed.