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

Table 6

-test assuming unequal variance, total shrinkage.

	CON2	PC2
Mean	−0.03	−0.034
Variance	0.001	0.001
Observations	7	7
Hypothesized Mean Difference	0
df	12
Stat.	0.007
() one-tail	0.50
critical one-tail	1.78
() two-tail	0.10
critical two-tail	2.18