The American Water Works Association reports that the per capita water use in a single-family home is 74 gallons per day. Legacy 2 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-five owners responded, and the sample mean water use per day was 69 gallons with a standard deviation of 8.3 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? 8 00:53:00 a. What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject HO: H 2 74 and fail to reject H1: u