∀ {α : Type u_1} {mα : MeasurableSpace α} (ρ : MeasureTheory.Measure (α × ℝ)) [MeasureTheory.IsFiniteMeasure ρ] (r : ℚ),
  (fun a => ↑(ProbabilityTheory.condCDF ρ a) ↑r) =ᵐ[ρ.fst] fun a => (ProbabilityTheory.preCDF ρ r a).toReal