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Table 10 Comparative analysis of the mean level of progress in grammar and vocabulary (post-treatment)

From: Enhancing students’ written production in English through flipped lessons and simulations

Overall score (post-treatment) Grammar and vocabulary

N

Levene’s Test

Student’s t test

f

sig.

t

Overall

Sig. (bilateral)

Mean diff.

Std. error of diff.

95% CI

Lower

Upper

Experimental

50

.044

.835

8.172

119.000

.000

.302

.037

.229

.044

Control

71

7.988

96.633

.000

.302

.037

.227

.197