nag_prob_f_vector (g01sdc) Example Program Results tail f df1 df2 p ivalid ------------------------------------------------------------------ Nag_LowerTail 5.500 1.5 25.5 0.9837 0 Nag_LowerTail 39.900 1.0 1.0 0.9000 0 Nag_LowerTail 2.500 20.2 1.0 0.5342 0