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Table 3 Estimated regression coefficients and corresponding texp and significance levels for the surface tension

From: Sustainable biosurfactant produced by Serratia marcescens UCP 1549 and its suitability for agricultural and marine bioremediation applications

Coefficient Value Standard deviation t exp p
b 0 30.1433 0.0652 462.2643 0.0000
b 1 2.8763 0.0799 36.0147 0.0001
b 2 − 3.1786 0.0799 − 39.8025 0.0000
b 3 − 0.7638 0.0799 − 9.5632 0.0024
b 12 − 1.6988 0.0799 − 21.2708 0.0002
b 13 − 0.9688 0.0799 − 12.1301 0.0012
b 23 1.1613 0.0799 14.5405 0.0007
b 123 0.9363 0.0799 11.7232 0.0013