Table 6. Independent sample t-test results for the experimental group and the control group.

Levene’s test for equality of variances						t-test for equality of means
	F	Sig.	t	df	Sig.(2-tailed)	Mean difference	Std. error difference	95% confidence interval of the difference
	F	Sig.	t	df	Sig.(2-tailed)	Mean difference	Std. error difference	Lower	Upper
Equal variance assumed	.875	.354	3.203	48	.002	8.52000	2.65990	3.17191	13.86809
Equal variance not assumed			3.203	46.421	.002	8.52000	2.65990	3.16721	13.87279