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The mean consumption of water per household in a city was 1201 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 96 households was found to be 1153 cubic feet per month. The population standard deviation is given to be 249 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 at a = 0.01? Round your answer to four decimal places. p-value = i We b. Make the test of part a using the critical-value approach and α = 0.01. Round your answer for z to two decimal places. Zobserved = Ho. We ✓ Ho. We conclude that the mean consumption of water per household has by the city council. due to the campaign

The mean consumption of water per household in a city was 1201 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 96 households was found to be 1153 cubic feet per month. The population standard deviation is given to be 249 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 at a = 0.01? Round your answer to four decimal places. p-value = i We b. Make the test of part a using the critical-value approach and α = 0.01. Round your answer for z to two decimal places. Zobserved = Ho. We ✓ Ho. We conclude that the mean consumption of water per household has by the city council. due to the campaign

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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The mean consumption of water per household in a city was 1201 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 96 households was found to be 1153 cubic feet per month. The population standard deviation is given to be 249 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 at a = 0.01? Round your answer to four decimal places. p-value = i We b. Make the test of part a using the critical-value approach and a = 0.01. Round your answer for z to two decimal places. Zobserved Ho. We Ho. We conclude that the mean consumption of water per household has by the city council. due to the campaign
Transcribed Image Text:The mean consumption of water per household in a city was 1201 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 96 households was found to be 1153 cubic feet per month. The population standard deviation is given to be 249 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 at a = 0.01? Round your answer to four decimal places. p-value = i We b. Make the test of part a using the critical-value approach and a = 0.01. Round your answer for z to two decimal places. Zobserved Ho. We Ho. We conclude that the mean consumption of water per household has by the city council. due to the campaign
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