Extracted text: A sample of wastewater is analyzed for coliform organisms by the multiple-tube fermentation method. The results of the confirmed test are as follows: Sample size, mL No. of positive results No. of negative results out of 5 tubes out of 5 tubes 0.01 0.001 4 1 0.0001 3 0.00001 2 3 0.000001 Determine the MPN of coliforms. NNO