code: def normalnoisesim(nobs=500, loc=0.0):
      return loc + np.random.randn(nobs)
  
file_path: statsmodels/statsmodels/sandbox/tools/try_mctools.py
imports: from statsmodels.compat.python import lrange
  import numpy
  from scipy import stats
  from statsmodels.sandbox.tools.mctools import StatTestMC
  from statsmodels.stats.diagnostic import acorr_ljungbox
  from statsmodels.tsa.stattools import adfuller
label_desc: Use image node_id 1 for calling a global function with example usage: normalnoisesim(nobs, loc) and returns: unknown