Finding probabilities for the t-distribution Question 5: Find P(X<2.262) where X follows a t-distribution with 9 df. Question 6: Find P(X> -2.262) where X follows a t-distribution with 9 df. Question 7: Find P(Y<-1.325) where Y follows a t-distribution with 20 df. Question 8: What Excel command/formula can be used to find P(2.179