Answer Happy

Polyelectrolytes are typically used to separate oil and water in industrial applications. The separation process is dependent on controlling the pH. Fifteen (15) pH readings of wastewater following these processes were recorded. Is it reasonable to model these data using a normal distribution? 1.0 5.0 5.5 4.5 6.0 6.0 1.0 6.0 1.0 1.0 5.5 7.0 5.3 5.2 5.3 O Yes, it passes the "fat pencil" test. Therefore, a normal distribution is a reasonable model. O No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. O Yes, it passes the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. O No, it does not pass the "fat pencil" test. Therefore, a normal distribution is a reasonable model.