code: def create_numerical_test_data(n_rows):
      np.random.seed(1)
      X = pd.DataFrame(
          np.random.randn(n_rows, 4), columns=["x1", "x2", "x3", "x4"]
      )
      y = pd.Series(np.random.binomial(1, 0.4, n_rows))
      return X, y
  
file_path: AIX360/tests/rule_induction/trxf/utilities.py
imports: import numpy
  import pandas
  from aix360.algorithms.rule_induction.trxf.core import Predicate, Feature, Relation, Conjunction, DnfRuleSet
  from aix360.algorithms.rule_induction.trxf.pmml_export import models
  from aix360.algorithms.rule_induction.trxf.pmml_export.models import DataDictionary, DataField, OpType, DataType, MiningSchema, MiningField, MiningFieldUsageType, RuleSet, SimpleRule, CompoundPredicate, SimplePredicate, Operator, BooleanOperator
  from aix360.algorithms.rule_induction.trxf.pmml_export.models.data_dictionary import Value
label_desc: Use image node_id 1 for calling a global function with example usage: create_numerical_test_data(n_rows) and returns: X,  y