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Table 2

Chi-squared statistic and the null hypotheses based on odours detected

Null hypothesisChi-squared value (X2)SignificanceNull hypothesis accepted?
The odour of the data sample type of chemical used is independent of the odour in the jar test samples. 7.46 0.49 Yes 
The odours of the data samples from the WTP are independent of the odour of the data sample from the jar test samples. 8.36 0.08 Yes 
The odours of the data samples from the final water samples (Euroa and Shepparton) are independent of the odour of the data sample from the jar test samples. 182.41 <0.00001 No 
Null hypothesisChi-squared value (X2)SignificanceNull hypothesis accepted?
The odour of the data sample type of chemical used is independent of the odour in the jar test samples. 7.46 0.49 Yes 
The odours of the data samples from the WTP are independent of the odour of the data sample from the jar test samples. 8.36 0.08 Yes 
The odours of the data samples from the final water samples (Euroa and Shepparton) are independent of the odour of the data sample from the jar test samples. 182.41 <0.00001 No 
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