Mathematics, 26.02.2020 03:56 alvalynnw
The American Water Works Association reports that the per capita water use in a single-family home is 63 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-eight owners responded, and the sample mean water use per day was 60 gallons with a standard deviation of 8.9 gallons per day. At the 0.01 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average
Answers: 2
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The American Water Works Association reports that the per capita water use in a single-family home i...
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