Maximizing the Sustainability of Cement Utilization in Building Projects through the Use of Greener Materials

Table 5

-test on compressive strength of cements assuming unequal variances.

	CONT	PC1
Mean	35.68	39.10
Variance	40.38	44.54
Observations	4	4
Hypothesized Mean Difference	0
df	6
Stat.	−0.74
() one-tail	0.24
critical one-tail	1.94
() two-tail	0.48
critical two-tail	2.45