Testing the hypothesis, Macroeconomics

Assignment Help:

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).


Related Discussions:- Testing the hypothesis

Firm wants to sell goods, If a firm wants to sell goods more often, would t...

If a firm wants to sell goods more often, would they prefer to produce a high quality good that will not wear out or one that will wear out faster. For example, what is the 'life e

Perfectly competitive firm, Explain why P=MC in the short-run equilibrium o...

Explain why P=MC in the short-run equilibrium of the perfectly competitive firm, whereas in the long-run equilibrium P=MC=AC.

Determine the real rate of return on investment, A) Suppose Jean Splicer, a...

A) Suppose Jean Splicer, an investor, buys $300,000 of shares of stock in a diversified bundle of Bio-tech firms and exactly one year later sells those shares for $315,000. Assume

Neoclassical theory, Do neoclassical economists view prices and wages as st...

Do neoclassical economists view prices and wages as stickly or flexible

Anti-trust legislation, Explain why anti-trust legislation supports a perfe...

Explain why anti-trust legislation supports a perfectly competitive market. Give at least one specific example of legislation to justify your explanation.

Classical model, determination of interest rate in classical model

determination of interest rate in classical model

Country club bills, Suppose the country club bills based on a sample of 4 m...

Suppose the country club bills based on a sample of 4 members are: 358, 958, 665, 846. What is the standard deviation for this sample of bills? (please round your answer to 1 decim

Balance of payments, factors that causes the shifts in balance of payments...

factors that causes the shifts in balance of payments

Principle of opportunity cost applies to your life, Give an example of how ...

Give an example of how the Principle of Opportunity Cost applies to your life. Think of a recent decision you made. It could be a decision as simple as whether to eat out or cook y

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd