Question 8 < > The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.6 ppm and standard deviation 1.8 ppm. 6 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N b. What is the distribution of ? -N c. What is the probability that one randomly selected city's waterway will have less than 10.1 ppm pollutants? d. For the 6 cities, find the probability that the average amount of pollutants is less than 10.1 ppm. e. For part d), is the assumption that the distribution is normal necessary? O Yes No f. Find the IQR for the average of 6 cities. Q1 = ppm ppm IQR: ppm 99*