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# The mean consumption of water per household in a city was 1236 cubic feet per month....

## Question

###### The mean consumption of water per household in a city was 1236 cubic feet per month....

The mean consumption of water per household in a city was 1236 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 mean consumption of water for a sample of 97 households was found to be 1155 cubic feet per month. The population standard deviation is given to be 210 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 by the city council. Would you reject the null hypothesis ata = 0.01? Round your answer to four decimal places. p-value- We - Hoe b. Make the test of part a using the critical value approach and a = 0.01 Round your answer for to two decimal places. Zobserved - i We Ho We conclude that the mean consumption of water per household has due to the campaign by the city council

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