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The American Water Works Association reports that the per capita water use in a single-family home is 78 gallons per day Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water Use per day was 73 gallons with a standard deviation of 8.8 gallons per day. At the 0.05 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average? a. What is the decision rule? (Negative amount should be Indicated by a mlnus sign. Round your enswer to 3 decimal pleces.) Rejea Ho: ue78 snd conclude thatys78when the test statistic is b. Compute the value of the test statistic. (Negetive amount should be Indicated by a minus slgn. Round your answer to 2 decimel places.) yelue of the test statistic 10 of 10 Prey

The American Water Works Association reports that the per capita water use in a single-family home is 78 gallons per day Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water Use per day was 73 gallons with a standard deviation of 8.8 gallons per day. At the 0.05 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average? a. What is the decision rule? (Negative amount should be Indicated by a mlnus sign. Round your enswer to 3 decimal pleces.) Rejea Ho: ue78 snd conclude thatys78when the test statistic is b. Compute the value of the test statistic. (Negetive amount should be Indicated by a minus slgn. Round your answer to 2 decimel places.) yelue of the test statistic 10 of 10 Prey

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
Section10.4: Distributions Of Data
Problem 7PPS
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The American Water Works Association reports that the per capita water use in a single-family home is 78 gallons per day Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water Use per day was 73 gallons with a standard deviation of 8.8 gallons per day. At the 0.05 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average? a. What is the decision rule? (Negative amount should be Indicated by a mlnus sign. Round your enswer to 3 decimal pleces.) Rejea Ho: ue78 snd conclude thatys78when the test statistic is b. Compute the value of the test statistic. (Negetive amount should be Indicated by a minus slgn. Round your answer to 2 decimel places.) yelue of the test statistic 10 of 10 Prey
Transcribed Image Text:The American Water Works Association reports that the per capita water use in a single-family home is 78 gallons per day Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-nine owners responded, and the sample mean water Use per day was 73 gallons with a standard deviation of 8.8 gallons per day. At the 0.05 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average? a. What is the decision rule? (Negative amount should be Indicated by a mlnus sign. Round your enswer to 3 decimal pleces.) Rejea Ho: ue78 snd conclude thatys78when the test statistic is b. Compute the value of the test statistic. (Negetive amount should be Indicated by a minus slgn. Round your answer to 2 decimel places.) yelue of the test statistic 10 of 10 Prey
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