.F.F                                                                     [100%]
=================================== FAILURES ===================================
_______________________ test_sf_two_means_df_two[10000] ________________________
test_studentized_range_tail.py:13: in test_sf_two_means_df_two
    assert float(studentized_range.sf(q, 2, 2)) == pytest.approx(
E   assert 0.0 == 1.99999994000...e-08 ± 2.0e-16
E     
E     comparison failed
E     Obtained: 0.0
E     Expected: 1.999999940000002e-08 ± 2.0e-16
_______________________ test_cdf_two_means_df_two[10000] _______________________
test_studentized_range_tail.py:19: in test_cdf_two_means_df_two
    assert float(studentized_range.cdf(q, 2, 2)) == pytest.approx(
E   assert 1.0 == 0.9999999800000006 ± 1.0e-11
E     
E     comparison failed
E     Obtained: 1.0
E     Expected: 0.9999999800000006 ± 1.0e-11
=========================== short test summary info ============================
FAILED test_studentized_range_tail.py::test_sf_two_means_df_two[10000] - asse...
FAILED test_studentized_range_tail.py::test_cdf_two_means_df_two[10000] - ass...
2 failed, 2 passed in 0.81s