text: ##############################################################
  ## Helper file to check how therequired bell curve looks like.
  ##############################################################
  
  import numpy as np
  import matplotlib.pyplot as plt
  from scipy.stats import norm
  
  # Create range of x-values from --x to x in increments of .001
  x = np.arange(-2.2, 2.2, 0.001)
  y = norm.pdf(x, 0, 1.6)
  
  # Define plot
  fig, ax = plt.subplots(figsize=(9, 6))
  ax.plot(x, y)
  
  # Choose plot style and display the bell curve.
  plt.style.use('fivethirtyeight')
  plt.show()
  