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 u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?
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1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)
Answers: 1
The American Water Works Association reports that the per capita water use in a single-family home i...
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