Q3. A city planner wants to estimate the average monthly residential water usagein the city. He selected a random sample of 40 households from the city,which gave the mean water usage to be 3415.70 gallons over a 1-monthperiod. Based on earlier data, the population standard deviation of themonthly residential water usage in this city is 389.60 gallons. Make a 95%confidence interval for the average monthly residential water usage for allhouseholds in this city.

Given,sample size(n)=40sample mean(x¯)=3415.70standard…

Answered: Q3. A city planner wants to estimate…

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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Similar questions

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In 1988, on the math SAT, the males taking the exam averaged about 500, while the females averaged about 455. Both histograms followed the normal curve, and both standard deviations were about 100. Estimate the percentage of males in 1988 scoring over 600 Estimate the percentage of females in 1988 scoring over 600. What is the 10th percentile of the scores for the males? What is the first quartile of the scores for the females?
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