The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.3 ppm and standard deviation 1.3 ppm. 37 randomly selected large cities are studied. Round all answers to 4 decimal places where possible.What is the distribution of XX? XX ~ N(,)What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)What is the probability that one randomly selected city's waterway will have more than 9.6 ppm pollutants? For the 37 cities, find the probability that the average amount of pollutants is more than 9.6 ppm. For part d), is the assumption that the distribution is normal necessary? YesNoFind the IQR for the average of 37 cities.Q1 = ppmQ3 = ppmIQR: ppm

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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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The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.3 ppm and standard deviation 1.3 ppm. 37 randomly selected large cities are studied. Round all answers to 4 decimal places where possible.

What is the distribution of XX? XX ~ N(,)
What is the distribution of ¯xx¯? ¯xx¯ ~ N(,)
What is the probability that one randomly selected city's waterway will have more than 9.6 ppm pollutants?
For the 37 cities, find the probability that the average amount of pollutants is more than 9.6 ppm.
For part d), is the assumption that the distribution is normal necessary? YesNo
Find the IQR for the average of 37 cities.
Q1 =  ppm
Q3 =  ppm
IQR:  ppm

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