The mean consumption of water per household in a city was 1244 cubic feet per month. Due to a water shortage because of a drought,the city council campaigned for water use conservation by households. A few months after the campaign was started, the meanconsumption of water for a sample of 96 households was found to be 1164 cubic feet per month. The population standard deviation isgiven to be 257 cubic feet.a. Find the p-value for the hypothesis test that the mean consumption of water per household has decreased due to the campaign bythe city council. Would you reject the null hypothesis at a = 0.025?Round your answer to four decimal places.p-value =Weib. Make the test of part a using the critical-value approach and a = 0.025.ZobservedRound your answer for z to two decimal places.WeHo.iHo.We conclude that the mean consumption of water per household hasdue to the campaign by the city council.

According to the given information in this question We need to apply z test for one population mean

Answered: The mean consumption of water per…

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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