Energy efficiency rating - Math Problem Example

Only on StudentShare

Extract of sample
Energy efficiency rating

In comparing the means for both groups, using a 1% significance level, the two-tailed P value, at a 99% confidence interval, equals 0.6543. Thus, there is a 65.43% probability that the observed difference between the salaries between private and GOH nurses are actually more extreme than their true differences. At a 1% level of significance, this implies that there is not enough statistical evidence to indicate that the salaries in private hospitals are greater than those in GOH.
b. Comparing the means between the previous and current salaries, the previous salaries' mean is higher than the current salaries. At a 99% confidence interval, the two-tailed p-value equal to 0.4699 indicates that there is no reason to conclude that the means have a significant difference. In addition, the lower confidence limit of -3739.9893 indicates a large decrease in the lower limit coupled with a large increase in the upper confidence limit of 2033.3093. Thus, there is no conclusive evidence that the previous salaries are significantly lower than current ones. ...
Download paper

Summary

b. The researcher can now conclude that there is a negative linear correlation between EER and cost. One can now predict whether the cost of an air conditioning unit is reasonable, from a given EER. Thus, if it is considered that the best EER is, for example, 11.0, the least square line predicts that its estimated cost should be 449…
Author : zemlakorval

Related Essays

Constraints to the Development of Alternative Energy
The cause of the problem has already been identified: the increase in the emission of greenhouse gases in the atmosphere. These greenhouse gases include carbon dioxide, methane, nitrous oxide, chlorofluorocarbons and hydrofluorocarbons. Both the absence and increased volume of greenhouse gases are seen to be detrimental to the environment as less of it might cause negative temperature which disallows the earth to sustain life. On the other hand, increased volume of greenhouse gases is the primary source of global warming.
...
9 pages (2259 words) Essay
Energy Transfer and Thermodynamics
This is the second law of thermodynamics that was coined by Clausius and Thomson, entropy is denoted as S and this law states that the entropy of a given system that is not at equilibrium will tend to increase over time, and that at equilibrium maximum entropy is achieved.
...
8 pages (2008 words) Essay
Corporate Social Responsibility and Climatic Change
The effects of climate change are disrupting business operations and transportation, for example, in the UK; high-sided vehicles are increasingly at risk of accidents from floods and gale force winds. Such disruptions have the effect of reducing customer demand and purchasing power (Dudek and Wiener 1996, Romm 1999), as products and services become less available due to erratic supply. These disruptions also restrict the ability of the business to grow, as the sales revenues will be insufficient to generate profit for investment purposes. Climate change therefore poses a risk to businesses,...
10 pages (2510 words) Essay
Renewable Energy Master Essay
These are countries such as the United States and the United Kingdom amongst other developed countries. (Ruddiman 2005) The focus mainly has shifted to these countries due to their great contribution to carbon gases originating from their vast industries. Many countries have been responsive whereas others have remained adamant on their earlier stands and carbon pollution has remained as high as was first recorded.
...
12 pages (3012 words) Essay
Fuel and energy
Cutting trees, air pollution, water pollution etc. are some of the after-effects that tend to destroy the delicate balance of the nature.
...
4 pages (1004 words) Case Study
Got a tricky question? Receive an answer from students like you! Try us!