Table 7 Significance of the coefficients of regression

b₀

710.25

4.38

b₁

5.27

2.90

3.29

0.0999

b₂

6.08

2.90

4.38

0.0628

b₃

-3.26

2.90

1.26

0.2885

b₁₁

-20.12

3.79

28.13

0.0003^a

b₂₂

-4.62

3.79

1.49

0.2509

b₃₃

5.38

3.79

2.01

0.1870

b₁b₂

-43.30

2.83

234.59

<0.0001^a

b₁b₃

-50.02

2.83

313.03

<0.0001^a

b₂b₃

-57.44

2.83

412.85

<0.0001^a