Table 7.

Statistical analysis of effects of variables (media components) on antibacterial activity as per PBD.

Variables	Medium components	Effect	Standard error	t value	p-value	Confidence level (%)
A	Starch	−0.883	0.1250	−3.53	0.176	82.4
B	K2HPO4	2.217	0.1250	8.87	0.071	92.9
C	MgSO4·7H2O	1.683	0.1250	6.73	0.094	90.6
D	NaCl	−1.783	0.1250	−7.13	0.089	91.1
E	(NH4)2SO4	3.683	0.1250	14.73	0.043	95.7
F	CaCO3	1.117	0.1250	4.47	0.140	98.6
G	CuSO4.5H2O	−4.083	0.1250	−16.33	0.039	96.1
H	FeSo4.7H2O	0.883	0.1250	3.53	0.176	82.4
I	MnCl2.4H2O	1.550	0.1250	6.20	0.102	89.8
J	ZnSO4.7H2O	−0.983	0.1250	−3.93	0.158	84.2