Variable Effect Standard Error t p
LEP concentration 2.75 1.00 2.73 0.0525
Biosurfactant concentration -2.52 1.00 -2.51 0.0663
Temperature -1.93 1.00 -1.91 0.1280
LEP conc x Biosurfactant conc. 2.04 1.00 2.01 0.1135
Biosurfactant conc. x Temperature -3.52 1.00 -3.49 0.0251
Table 5: Standard variables effects (t) and the significance probability test (p).