A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 38 households from the city, which gave the mean water usage to be 3406.60 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.30 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city.

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 38 households from the city, which gave the mean water usage to be 3406.60 gallons over a one-month period. Based on earlier data, the population standard deviation of the monthly residential water usage in this city is 387.30 gallons. Make a 97% confidence interval for the average monthly residential water usage for all households in this city.

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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