code: def test_zscore_2dim(self, xp, scp, dtype):
      x = testing.shaped_random((5, 3), xp, dtype=dtype)
      return scp.stats.zscore(x)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx
  import cupyx.scipy.stats
label_desc: Use image node_id 3 for calling the TestZscore obj's underlying member method code with example usage: obj.test_zscore_2dim(xp, scp, dtype) and returns: scp