code: def test_range(self):
      tau = sample_tau(100)
      self.assertGreaterEqual(min(tau), 2.87)
      self.assertLessEqual(max(tau), 3.8)
  
imports: import unittest
  import dask.dataframe
  import numpy
  import pandas
  from tsfresh import extract_features, extract_relevant_features
  from tsfresh.examples.driftbif_simulation import load_driftbif, sample_tau, velocity
  from tsfresh.feature_extraction import MinimalFCParameters
label_desc: Use image node_id 2 for calling the SampleTauTestCase obj's underlying member method code with example usage: obj.test_range() without return types