County health inspectors tested 400 residential water lines for the presence of E. coli contamination. The test they use can detect the presence of a single coliform bacterium in 100 ml of water. A total of thirteen lines were found to be contaminated. Which of the following statements are true? Select all that apply. O The size of the sample space is 13. O The size of the sample space is 2. 13 The experimentel probability of finding contamination is 400 1 The experimental probability of finding contamination is 100 13 The experimental probability of finding contamination is 400

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