Robust Tests of Equality of Means ZI*

Conc.

Test

Statistic

df1

df2

Sig.

25% v/v

Welch

11.86

10

4.37

0.01

Multiple Comparisons (Games-Howell Post Hoc)*

Conc.

(I) Org

(J) Org

Mean Difference (I-J)

Std. Error

Sig.

95% Confidence Interval

Lower Bound

Upper Bound

25% v/v

B2

(B6)

9

0.71

0.03

1.80

16.19