The amount of pollutants that are found in waterways near large cities is normally distributed with mean8.6 ppm and standard deviation 1.8 ppm. 38 randomly selected large cities are studied. Round all answersto 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 7.8 ppmpollutants?d. For the 38 cities, find the probability that the average amount of pollutants is less than 7.8 ppm.e. For part d), is the assumption that the distribution is normal necessary?f. Find the IQR for the average of 38 cities.YesO NoQ1 =ppmQ3 =ppm%3DIQR:ppm

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Answered: The amount of pollutants that are found…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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