In my world probability is a sononymous with belief.

Why don't we see what the dictionary has to say.

Main Entry:prob·a·bil·i·ty

Pronunciation: \?prä-b?-'bi-l?-te\

Function:noun

Inflected Form(s):pluralprob·a·bil·i·ties

Date: 15th century

1:the quality or state of being probable2:something (as an event or circumstance) that is probable3 a(1):the ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes(2):the chance that a given event will occurb:a branch of mathematics concerned with the study of probabilities4:a logical relation between statements such that evidence confirming one confirms the other to some degree

3 (a) leaves little room for "belief."