A comparative study of the effect of teacher’s group and individual feedback on Iranian EFL learners’ learning of speech acts in apology letter writing

Table 11 Independent samples t-test; posttest of speech acts by groups

	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 variances assumed	.373	.546	2.619	30	.014	4.875	1.861	1.074	8.676
Equal variances not assumed			2.619	29.780	.014	4.875	1.861	1.073	8.677