Homework Help is Here – Start Your Trial Now!
Math
Statistics
The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.1 ppm and standard deviation 1.7 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 9.1 1.7 b. What is the distribution of x? ~ N( 9.1 0.2874✔ c. What is the probability that one randomly selected city's waterway will have more than 9.1 ppm pollutants? 0.5 OB d. For the 35 cities, find the probability that the average amount of pollutants is more than 9.1 ppm. 0.5 Ꮕ e. For part d), is the assumption that the distribution is normal necessary? No Yes f. Find the IQR for the average of 35 cities. Q1 = 8.9075 x ppm Q3 = 9.2925 x ppm IQR: 0.3850 x ppm می من

The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.1 ppm and standard deviation 1.7 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 9.1 1.7 b. What is the distribution of x? ~ N( 9.1 0.2874✔ c. What is the probability that one randomly selected city's waterway will have more than 9.1 ppm pollutants? 0.5 OB d. For the 35 cities, find the probability that the average amount of pollutants is more than 9.1 ppm. 0.5 Ꮕ e. For part d), is the assumption that the distribution is normal necessary? No Yes f. Find the IQR for the average of 35 cities. Q1 = 8.9075 x ppm Q3 = 9.2925 x ppm IQR: 0.3850 x ppm می من

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
See similar textbooks
icon
Related questions
Question
F ONLY PLEASE
The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.1 ppm and standard deviation 1.7 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( 9.1 1.7 Or b. What is the distribution of x? - N 9.1 0.2874) or or c. What is the probability that one randomly selected city's waterway will have more than 9.1 ppm pollutants? 0.5 d. For the 35 cities, find the probability that the average amount of pollutants is more than 9.1 ppm. 0.5 e. For part d), is the assumption that the distribution is normal necessary? No Yes f. Find the IQR for the average of 35 cities. Q1 = 8.9075 X ppm Q3 = 9.2925 x ppm IQR: 0.3850 x ppm
Transcribed Image Text:The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9.1 ppm and standard deviation 1.7 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( 9.1 1.7 Or b. What is the distribution of x? - N 9.1 0.2874) or or c. What is the probability that one randomly selected city's waterway will have more than 9.1 ppm pollutants? 0.5 d. For the 35 cities, find the probability that the average amount of pollutants is more than 9.1 ppm. 0.5 e. For part d), is the assumption that the distribution is normal necessary? No Yes f. Find the IQR for the average of 35 cities. Q1 = 8.9075 X ppm Q3 = 9.2925 x ppm IQR: 0.3850 x ppm
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
SEE MORE TEXTBOOKS