Table 2.

Independent samples t-test of pretest results between two groups.

	Levene's Test for equality of variance		t-test for equality of means
	F	Sig.	T	df	Sig. (2-tailed)	Mean difference	Std. error difference
								Lower	Upper
Equal variance assumed	11.636	.002	−1.274	28	.213	−1.3333	1.04623	−3.47644	.80978
Equal variance not assumed			−1.274	21.056	.216	−1.3333	1.04623	−3.50874	.84207