code: def stats_file2(tmp_path: Path):
      """New style"""
      p = tmp_path / "stats.npz"
  
      count = 10
      np.random.seed(0)
      x = np.random.randn(count, 80)
      s = x.sum(0)
      s2 = (x**2).sum(0)
  
      np.savez(p, sum=s, sum_square=s2, count=count)
      return p
  
file_path: espnet/test/espnet2/layers/test_global_mvn.py
imports: from pathlib import Path
  import numpy
  import pytest
  import torch
  from espnet2.layers.global_mvn import GlobalMVN
label_desc: Use image node_id 2 for calling a global function with example usage: stats_file2(tmp_path) and returns: p