Levene’s Test for

Equality of Variances

t-test for Equality of Means

F

Sig.

T

df

Sig. (2-Tailed)

Mean

Difference

Standard

Error Difference

95% Confidence Interval

of the Difference

Lower

Upper

Equal Variances Assumed

18.311

0.000

−10.757

401

0.000

−4.98976

0.46386

−5.90167

−4.07785

Equal Variances Not Assumed

−10.814

344.241

0.000

−4.98976

0.46140

−5.89727

−4.08225