Average Customer Satisfction Score Customers Requiring Staff Assistance Mean 3.19 302.87 Variance 1.95 3470.41 Observations 180.00 180.00 Pooled Variance 1736.18 Hypothesized Mean Difference 0 df 358 t Stat -68.23048906 P(T<=t) one-tail 1.4489E-207 t Critical one-tail 1.649121068 P(T<=t) two-tail 2.8978E-207 t Critical two-tail 1.966612519 Provides a clear and insightful piece of advice which relates heavily to the analysis done above