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O Question 17 The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.5 ppm and standard deviation 1.4 ppm. 36 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N 9.5 b. What is the distribution of ? - N 9.5 1.4 c. What is the probability that one randomly selected city's waterway will have more than 9.2 ppm pollutants? 0.5848 d. For the 36 cities, find the probability that the average amount of pollutants is more than 9.2 ppm. Q3 = IQR: < > e. For part d), is the assumption that the distribution is normal necessary? O No Yes f. Find the IQR for the average of 36 cities. Q1 = ppm ppm ppm 1.4

O Question 17 The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.5 ppm and standard deviation 1.4 ppm. 36 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N 9.5 b. What is the distribution of ? - N 9.5 1.4 c. What is the probability that one randomly selected city's waterway will have more than 9.2 ppm pollutants? 0.5848 d. For the 36 cities, find the probability that the average amount of pollutants is more than 9.2 ppm. Q3 = IQR: < > e. For part d), is the assumption that the distribution is normal necessary? O No Yes f. Find the IQR for the average of 36 cities. Q1 = ppm ppm ppm 1.4

MATLAB: An Introduction with Applications
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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Question 17 letters d-f
O Question 17 ▼ The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.5 ppm and standard deviation 1.4 ppm. 36 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 9.5 b. What is the distribution of ? - N9.5 1.4 c. What is the probability that one randomly selected city's waterway will have more than 9.2 ppm pollutants? 0.5848 d. For the 36 cities, find the probability that the average amount of pollutants is more than 9.2 ppm. IQR: Check Answer < > e. For part d), is the assumption that the distribution is normal necessary? O No Yes f. Find the IQR for the average of 36 cities. Q1 = Q3 = ppm ppm ppm 1.4
Transcribed Image Text:O Question 17 ▼ The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.5 ppm and standard deviation 1.4 ppm. 36 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N( 9.5 b. What is the distribution of ? - N9.5 1.4 c. What is the probability that one randomly selected city's waterway will have more than 9.2 ppm pollutants? 0.5848 d. For the 36 cities, find the probability that the average amount of pollutants is more than 9.2 ppm. IQR: Check Answer < > e. For part d), is the assumption that the distribution is normal necessary? O No Yes f. Find the IQR for the average of 36 cities. Q1 = Q3 = ppm ppm ppm 1.4
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