code: def test_mv_test_mean(self):
      assert_almost_equal(
          self.mvres1.mv_test_mean(np.array([14, 56])),
          self.res2.mv_test_mean,
          4,
      )
  
imports: import numpy
  from numpy.testing import assert_almost_equal
  from statsmodels.datasets import star98
  from statsmodels.emplike.descriptive import DescStat
  from .results.el_results import DescStatRes
label_desc: Use image node_id 8 for calling the TestDescriptiveStatistics obj's underlying member method code with example usage: obj.test_mv_test_mean() without return types