Call us toll-free

## Hypothesis on static electricity by Rosio Stone - issuu

Electric energy consumption is the form of energy consumption that uses electric energy

Pages:

275 Words

\$19,50

# Science Fair Projects - Measuring static electricity

Electricity is good, and access to electric power is central to human development. There is simply no better indicator of a country’s level of development than its per capita use of electricity. The current push in some parts of the world to raise the price of electricity to decrease consumption stands at great odds with experience—higher prices discourage usage.

1. The Alternative Hypothesis (Hα), or the hypothesis that is being proposed:
Ha: mean of Group 1 – mean of Group 2 > 0
“High Electricity Consumers have a higher HDI than Low Electricity Consumers”

## Electric energy consumption - Wikipedia

My hypothesis should be partially rejected because only the metal allowed the current to pass through and light up the bulb. PURPOSE Electricity can hurt people, and things that use electricity will not work if the electricity does not stay in the wires.

2. The Null Hypothesis (Ho), or simply the negation of Ha:
Ho: mean of Group 1 – mean of Group 2 ≤ 0
“High Electricity Consumers do not have a higher mean HDI than Low Electricity Consumers”

## Electricity data are from IEA/OECD 2008 (retrieved on April 2011)

We choose a Two-Sample T-Test because it is a hypothesis test that answers questions about two means when the data collected are from two independent random samples, each from an underlying normally distributed population. A non-pooled variance is used because the standard deviation of Group 2 is more than double the standard deviation of Group 1 (0.135 vs. 0.0658). The amount of evidence required to accept that High Electricity Consumers have a higher HDI than Low Electricity Consumers is known as the “significance level,” or critical p-value. If the obtained p-value, denoted by α, is below .05, then the null hypothesis can be rejected. But, to be 99% certain there is a relationship between high electricity use and HDI we will test at α = 0.01. The Minitab output for the Two-Sample T-Test is as follows:

Because the p-value is 0.000, the null hypothesis (Ho) can be rejected and the alternative hypothesis (Ha) can be accepted, even at the highly significant level of α = 0.01. There is sufficient evidence to conclude that those countries that use at least 2,000 kWh per capita a year (High Electricity Consumers) have a significantly higher HDI than those countries that do not (Low Electricity Consumers).

• ### mwvsciencefair - Static Electricity

Easy Static Electricity science projects - Light a light bulb using a balloon, bend a stream of water, and more.

• ### Electricity ?? - Poupe dinheiro aqui!

Hypothesis - Wikipedia

• ### Static Electricity - Science Projects

A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon

## Wind Energy Hypothesis Free Essays - StudyMode

The current did not flow through any of the materials except the metal. I think I would have a different result if I used a bigger battery or electricity from the wires coming into the house. CONCLUSION My hypothesis should be partially rejected.

• ### Kim

"I have always been impressed by the quick turnaround and your thoroughness. Easily the most professional essay writing service on the web."

• ### Paul

"Your assistance and the first class service is much appreciated. My essay reads so well and without your help I'm sure I would have been marked down again on grammar and syntax."

• ### Ellen

"Thanks again for your excellent work with my assignments. No doubts you're true experts at what you do and very approachable."

• ### Joyce

"Very professional, cheap and friendly service. Thanks for writing two important essays for me, I wouldn't have written it myself because of the tight deadline."

• ### Albert

"Thanks for your cautious eye, attention to detail and overall superb service. Thanks to you, now I am confident that I can submit my term paper on time."

• ### Mary

"Thank you for the GREAT work you have done. Just wanted to tell that I'm very happy with my essay and will get back with more assignments soon."