Week 9: Chapter 7 - Centra X apa format citation - Search X APA Formatting and Citatic X Course Hero X + X C https:/ightingale.instructure.com/courses/3345304/assignments/33452646?module_... Q . . . . Question 7 The amount of pollutants that are found in waterways near large cities is normally distributed with mean 8.8 ppm and standard deviation 1.3 ppm. 35 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 T? I ~ N octor c. What is the probability that one randomly selected city's waterway will have more than 9 ppm pollutants? d. For the 35 cities, find the probability that the average amount of pollutants is more than 9 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 35 cities. Q1 = ppm Q3 = pm IQR: ppm 22 of 24 - Clipboard Hint: Item not Collected: Delete items to increase available space Type here to search 7:19 PM 56 0 F 3/10/2022