For the following hypothesis test: H0: μ1 = μ2 Ha: μ1 ≠ μ2 at α = 0.01 with: n1 = 45, n2 = 75, S1 = 18.55, S2 = 10.24, x̄1 = 64, x̄2 = 39.
Assuming not equal variances, what will be the test statistic calculated value? The test statistic calculated value =