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t_inv

Inverse Student’s t left-tail CDF.

v = t_inv(probability, deg_freedom)

Returns the x such that t_dist(x, df, true) = probability.

t_inv(0.95, 10) % ≈ 1.812
  • t_dist — Student’s t left-tail PDF or CDF.
  • t_inv_2t — Inverse Student’s t two-tailed CDF.