TABLE 7.

Independent-sample t-test of the two versions of the platform.

Version of platform	Mean	SD	Difference of mean	SE	P	95% Confidence intervals		Levene’s test for equality of variances
						Upper limit	Lower limit	F	Significance
2020	4.20	0.42	0.14*	0.07	0.04	0.005	0.27	3.12	0.079
2019	4.06	0.53

*P < 0.05.