please solve

The amount of pollutants that are found in waterways near large cities is normally distributed with mean 8.5 ppm and standard deviation 1.3 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 E? E ~ N( c. What is the probability that one randomly selected city's waterway will have less than 8.3 d. For the 6 cities, find the probability that the average amount of pollutants is less than 8.3 e. For part d), is the assumption that the distribution is normal necessary? 0 N00 Yes f. Find the IQR for the average of 6 cities. 03 =| ppm