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An effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 117 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $74. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past, what is the test statistic? (please round your answer to 2 decimal places).
DEFINE IS CURVES AND DRIEVE IT
After a competitive bidding process, Firm G wins a contract to collect and dispose of Firm H's hazardous waste for $1,000 per year. Firm G's labor costs are $200 per year, and beca
explain and illustrate how the Lm curve is derived.
In a particular month, the labor force is 130 million, there are 9.1 million unemployed workers, the job -losing rate is 3% per month, and the job-finding rate is 40% per month. Ho
Can democracy survive if a majority of the citizenry pays little or nothing in taxes while benefiting directly from a higher level of government spending? Why or why not?
How can a country maintain equilibrium GDP with foreign trade?
Using supply and demand diagrams, plus explanations of why you have drawn the supply and demand curves the way you have, explain why, in most cases. a) Garbage collectors earn mor
The resource based model identifies four criteria that firms can use to evaluate whether particular resources and capabilities are core competencies and can therefore, provide a ba
ABSOLUTE ADVANTAGE
Suppose the price elasticity of demand for used cars is estimated to be 3 what does this mean?
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