A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 42 households from the city, which gave the mean water usage to be 3409.7 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.9 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city. Round your answers to one decimal place. i to gallons
A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 42 households from the city, which gave the mean water usage to be 3409.7 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.9 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city. Round your answers to one decimal place. i to gallons
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
![A city planner wants to estimate the average monthly residential water usage in the city. He
selected a random sample of 42 households from the city, which gave the mean water usage to
be 3409.7 gallons over a one-month period. Based on earlier data, the population standard
deviation of the monthly residential water usage in this city is 387.9 gallons. Make a 97%
confidence interval for the average monthly residential water usage for all households in this
city.
Round your answers to one decimal place.
to
M.
gallons](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47daba89-90bc-438f-a3b8-8a2c5edd997f%2F6beeba85-9ac6-456b-8e81-db9bb71667b5%2Fms5qma_processed.png&w=3840&q=75)
Transcribed Image Text:A city planner wants to estimate the average monthly residential water usage in the city. He
selected a random sample of 42 households from the city, which gave the mean water usage to
be 3409.7 gallons over a one-month period. Based on earlier data, the population standard
deviation of the monthly residential water usage in this city is 387.9 gallons. Make a 97%
confidence interval for the average monthly residential water usage for all households in this
city.
Round your answers to one decimal place.
to
M.
gallons
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