import numpy as np
from matplotlib import pyplot as plt

# Brachiosaurus
b_data = np.random.normal(6.7, 0.7, size=1000)

# Fictionosaurus
f_data = np.random.normal(7.7, 0.3, size=1000)

plt.hist(b_data,
         bins=30, range=(5, 8.5), histtype='step',
         label='Brachiosaurus')
plt.hist(f_data,
         bins=30, range=(5, 8.5), histtype='step',
         label='Fictionosaurus')
plt.xlabel('Femur Length (ft)')
plt.legend(loc=2)
plt.show()
