Computational Statistics

Current Attempt in Progress The mean consumption of water per household in a city was 1228 cubic feet per month. Due to a water shortage because of a drought, the city cou ncil campaigned for water use conservation by households. A few months after the campaign was started, the mean consumption of water for a sample of 93 households was found to be 1181 cubic feet per month. The population standard deviation is given to be 234 cubic feet. 3. Find the p-value for the hypothesis test that the mean consumption of 1water per household has decreased due to the campaign by the city council. Would you reject the null hypothesis at a : 0.05? Round your answer to four decimal places. We l V' Ho. b. Make the test of part 3 using the critical-value approach and a = 0.05. Round your answer for z to two decimal places. WE ' V' Ha. We conclude that the mean consumption of water per household has due to the campaign by the city council. not decreased decreased eTextbook and Media