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

Determine H and a from the given parameters of the population and the sample size. Round the answer to the nearest thousandth where appropriate. H-42, a 36, n=36 a. P b.σ =

A bag has 12 different-colored marbles: 4 green, 5 blue, 1 yellow, and 2 orange. You draw a marble from the bag. If you get an orange marble or yellow marble, you win a prize. The table shows that there were 50 trials of picking a marble from the bag. 1.Use the results of the simulation to calculate the experimental probability of winning. Show your work and provide the formula/ratio used.   2.What was the most likely outcome in the simulation? What was the least likely outcome? Why?