q3_7.py

test = {   'name': 'q3_7',
    'points': None,
    'suites': [   {   'cases': [{'code': '>>> isinstance(observed_diff_mean, float) and observed_diff_mean < 0\nTrue', 'hidden': False, 'locked': False}],
                      'scored': True,
                      'setup': '',
                      'teardown': '',
                      'type': 'doctest'}]}