Providing an Expert System to Manage Energy Consumption in Small- and Medium-Sized Industries Using Soft Computing

Table 15

SPSS software outputs for testing the difference in the average number of blackouts.

Treatments	Levene’s test for equality of variances		t-test for equality of means
	F	Sig.	t	df	value	Mean difference	SD	95% confidence interval of the difference
								Lower	Upper
Equal variances assumed	40.955	0.000	5.166	122	0.000	4.14516	0.80247	2.55660	5.73373
Equal variances not assumed	—	—	5.166	87.113	0.000	4.14516	0.80247	2.55020	5.74012