Answers based on T-test ran:

t-Test: Two-Sample Assuming Equal Variances Mean Variance Observations Pooled Variance Hypothesized Mean Difference df t Stat one-tail t Critical one-tail two-tail t Critical two-tail 4213.6 686857.6735 648036.8165 4.083565253 4.53206E-05 1.660551217 9.06412+05 1.984467455 3556.14 609215.9596