def TestIntervention():
"""Tests whether reported changes are statistically significant.
Results:
-1.66 4.73095323208e-05
-0.26 0.125267987207
1.4 0.00182694836898
Conclusions:
1) Gender gap before intervention was 1.66 points (p-value 5e-5)
2) Genger gap after was 0.26 points (p-value 0.13, no significant)
3) Change in gender gap was 1.4 points (p-value 0.002, significant).
"""
male_before = normal.Normal(3.57, 0.28**2)
male_after = normal.Normal(3.44, 0.16**2)
female_before = normal.Normal(1.91, 0.32**2)
female_after = normal.Normal(3.18, 0.16**2)
diff_before = female_before - male_before
print(diff_before.mu, 1-diff_before.Prob(0))
diff_after = female_after - male_after
print(diff_after.mu, 1-diff_after.Prob(0))
diff = diff_after - diff_before
print(diff.mu, diff.Prob(0))
def Normal(self):
import normal
nueva_escena = normal.Normal(self.pilas)
return self.definir_escena(nueva_escena)