Q&A: Science Fair… Help!!! Ill give 20 points to the best answer?

Question by Bai:): Science Fair… Help!!! Ill give 20 points to the best answer?

I need a Science fair project for an 8th grader. It doesn’t have to be hard, but it has to be not like something a 4th grader would do. Here are the guidelines:
No animals all… sorry!!!
Science Project Topics to Avoid Why
Any topic that boils down to a simple preference or taste comparison. For example, “Which tastes better: Coke or Pepsi?” Such experiments don’t involve the kinds of numerical measurements we want in a science fair project. They are more of a survey than an experiment.
Most consumer product testing of the “Which is best?” type. This includes comparisons of popcorn, bubblegum, make-up, detergents, cleaning products, and paper towels. These projects only have scientific validity if the Investigator fully understands the science behind why the product works and applies that understanding to the experiment. While many consumer products are easy to use, the science behind them is often at the level of a graduate student in college.
Any topic that requires people to recall things they did in the past. The data tends to be unreliable.
Effect of colored light on plants Several people do this project at almost every science fair. You can be more creative!
Effect of music or talking on plants Difficult to measure.
Effect of running, music, video games, or almost anything on blood pressure The result is either obvious (the heart beats faster when you run) or difficult to measure with proper controls (the effect of music).
Effect of color on memory, emotion, mood, taste, strength, etc. Highly subjective and difficult to measure.
Any topic that requires measurements that will be extremely difficult to make or repeat, given your equipment. Without measurement, you can’t do science.
Graphology or handwriting analysis Questionable scientific validity.
Astrology or ESP No scientific validity.
Any topic that requires dangerous, hard to find, expensive, or illegal materials. Violates the rules of virtually any science fair.
Any topic that requires drugging, pain, or injury to a live vertebrate animal. Violates the rules of virtually any science fair.
Any topic that creates unacceptable risk (physical or psychological) to a human subject. Violates the rules of virtually any science fair.
Any topic that involves collection of tissue samples from living humans or vertebrate animals. Violates the rules of virtually any science fair.

So, as you can see it is hard to find a good project.

Also, NO planes, or volcanoes.

The idea does not have to be original…
Also, please don’t give me a list of websites.. Give me ideas… and please explain them in some detail
and ill give 20 points to the best answer

Best answer:

Answer by Sukayna
what grade r u in??? im only in 7th!

What do you think? Answer below!

i need Economics help asap 9 quistions 10 points?

Question by Bigdog92: i need Economics help asap 9 quistions 10 points?

same thing on this link i asked 2 know sp plz help
http://answers.yahoo.com/question/index;_ylt=AhtSFzJghJdfYOzfKuaGkW3sy6IX;_ylv=3?qid=20100330110426AA3rtyOif u find them on the web plz list the links plz thank you
____is known as the capacity to be useful.

A. Wealth

B. Utility

C. Productivity

D. Paradox of value

The sum collection of those economic products that are tangible, scarce and useful. This is known as ___________.

A. Wealth

B. Productivity

C. Utility

D. Value
The _________ issued a recall of asbestos-insulated hair dryers, put an end to the use of benzene in paint removers, banned the use of Tris, cancer-causing flame retardant in children’s clothing-and required that slats on baby cribs be set closer together to prevent strangulation.

A. Occupational Safety and Health Administration

B. Food and Drug Administration

C. Consumer Product Safety Commission

D. Federal Power Commission

E. None of the above
There are government agencies not only to protect our health, but to protect our pocketbooks. ____________ tries to prevent deceptive advertising. These are called Truth in Advertising laws. It has made producers of aspirin pills, diet breads, toothpastes, cigarettes, and numerous other products either prove their claims or change their advertisements.

A. The Federal Trade Commission

B. Occupational Safety and Health Administration

C. Consumer Product Safety Commission

D. Food and Drug Administration

__________includes buildings, machinery and equipment.

A. Physical Capital

B. Human Capital

C. Neither
Fed and State Governments make payments to lower levels of government. These are known as_________.

A. Grants in Aid

B. Subsidies and Incentives

C. Transfer Payments

D. Direct Purchase
Given by government, raised by taxes, to assist individuals who give the government nothing in return. This is known as_______.

A. Subsidies and Incentives

B. Grants in Aid

C. Transfer Payments

D. Transfer Incentives
THe_________sought to prevent the creation of monopolies by defining specific illegal practices such as trusts and interlocking directorates.

A. Celler – Kefauver Act

B. Sherman Antitrust Act

C. Interstate Commerce Commission Act

D. Clayton Antitrust Act
The_________was a set of federal deficit targets for Congress and the President to meet over a six year span of time. The federal deficit was to decrease each year until it reached zero in 1991.

A. Budget Enforcement Act (BEA) of 1990

B. Balanced Budget and Emergency Deficit Control Act of 1985

C. Omnibus Budget Reconciliation Act of 1993

D. Omnibus Budget Reconciliation Act of 1985

Best answer:

Answer by Josh A
c
a
c
a
a
b
b
b
b

What do you think? Answer below!

Science Fair!!! Help… I’ll give 20 points to the Best Answer!!!?

Question by Bai:): Science Fair!!! Help… I’ll give 20 points to the Best Answer!!!?

I need a Science fair project for an 8th grader. It doesn’t have to be hard, but it has to be not like something a 4th grader would do. Here are the guidelines:
No animals all… sorry!!!
Science Project Topics to Avoid Why
Any topic that boils down to a simple preference or taste comparison. For example, “Which tastes better: Coke or Pepsi?” Such experiments don’t involve the kinds of numerical measurements we want in a science fair project. They are more of a survey than an experiment.
Most consumer product testing of the “Which is best?” type. This includes comparisons of popcorn, bubblegum, make-up, detergents, cleaning products, and paper towels. These projects only have scientific validity if the Investigator fully understands the science behind why the product works and applies that understanding to the experiment. While many consumer products are easy to use, the science behind them is often at the level of a graduate student in college.
Any topic that requires people to recall things they did in the past. The data tends to be unreliable.
Effect of colored light on plants Several people do this project at almost every science fair. You can be more creative!
Effect of music or talking on plants Difficult to measure.
Effect of running, music, video games, or almost anything on blood pressure The result is either obvious (the heart beats faster when you run) or difficult to measure with proper controls (the effect of music).
Effect of color on memory, emotion, mood, taste, strength, etc. Highly subjective and difficult to measure.
Any topic that requires measurements that will be extremely difficult to make or repeat, given your equipment. Without measurement, you can’t do science.
Graphology or handwriting analysis Questionable scientific validity.
Astrology or ESP No scientific validity.
Any topic that requires dangerous, hard to find, expensive, or illegal materials. Violates the rules of virtually any science fair.
Any topic that requires drugging, pain, or injury to a live vertebrate animal. Violates the rules of virtually any science fair.
Any topic that creates unacceptable risk (physical or psychological) to a human subject. Violates the rules of virtually any science fair.
Any topic that involves collection of tissue samples from living humans or vertebrate animals. Violates the rules of virtually any science fair.

So, as you can see it is hard to find a good project.

Also, NO planes, or volcanoes.

The idea does not have to be original…
Also, please don’t give me a list of websites.. Give me ideas… and please explain them in some detail
and ill give 20 points to the best answer

Best answer:

Answer by Sehaj S
http://www.free-science-fair-projects.com/Science-Fair-Projects-Search.aspx?Grade=8&Category=All
go here and i think its going help 😀

answer mine ?? http://answers.yahoo.com/question/index;_ylt=AsCzBh90zXmaMFwbNCjXL2Psy6IX;_ylv=3?qid=20091118165256AA40vbK

Know better? Leave your own answer in the comments!

Are you good with probability Questions?10 points and more?

Question by Emperor: Are you good with probability Questions?10 points and more?

This is my last problem and I’m not sure how to solve this:
A large consumer company ran a television advertisement for one of its soap products.On the basis of a survey that was conducted, probabilities were assigned to the following events.
B=individual purchased the product
S=individual recalls seeing the advertisement
B?S=individual purchased the product and recalls seeing the advertisement
The probabilities assigned were
P(B)=.20
P(S)=.40
P(B?S)=.12
a.)What is the probability of an individual’s purchasing the product given that the individual recalls seeing the advertisement?Does seeing the advertisement increase the probability that the individual will purchase the product? As a decision maker, would you recommend continuing the advertisement(assuming that the cost is reasonable)?

b.)Assume the individuals who do not purchase the company’s soap product buy from its competitors.What would be your estimate of the company’s market share?Would you expect that continuing the advertisement will increase the company’s market share?Why or why not?

c.)The company also tested another advertisement and assigned it values of P(S)=.30 and P(B?S)=.10. What is P(B/S) for this other advertisement?Which advertisement seems to have had the bigger effect on customer purchases?

Any help is appreciated. Thanks. Free computer help and Spanish help if you help me out with this.That is if you ever need it.And your ten points of course.:)
Thank you Isaac. I appreciate it.

Best answer:

Answer by Isaac N
P[B/S] = P[B and S] / P[S]

This is about all you need to do the problem. For the first question, I got that the probability of an individual purchasing the product given that the individual recalls seeing the advertisement is 0.3.

It’s interesting how you might interpret this result. We know that if a person “recalls” seeing the advertisement, that this increases the probability of the person purchasing the soap from 0.2 to 0.3. However, that does not mean that if a person saw the advertisement that it increases the probability of them purchasing the soap.

There may be people that saw the advertisement and forgot about it. Chances are, this demographic is less likely to purchase the soap because they found its advertisement forgettable. Therefore, it may even out, and the probability of a person purchasing the soap, given that the person has seen the advertisement (regardless of whether they remember it), might not increase.

So the calculations are easy, but interpretation of the results might be complicated.

Personally, I would give the following answers:

Seeing the advertisement does not necessarily increase the probability of the person purchasing the soap. I therefore cannot reccomend whether or not to continue the advertisement.

In the second question, I would estimate the market share to be 20%, assuming that everyone buys soap. If competitors also run advertisements, then it is not clear whether continuing advertisements will increase market share, though it may keep it from decreasing.

In the third question, P[B/S] = 0.33, so it seems that the second advertisement had a bigger effect. However, this is not necessarily the case because we again do not know the behavior of the people who saw the advertisement and forgot about it.

Add your own answer in the comments!

Want to win a quick ten points ? Well summarize this article?

Question by eag: Want to win a quick ten points ? Well summarize this article?

Photographs taken of Liam Johns’ crib by the Sacramento County Coroner’s Office clearly show where it came apart.

The drop rail had detached from its plastic track, creating a gap through which the 9-month-old boy slipped feet-first. Instead of falling to the floor, Liam got his head stuck between the rail and the mattress. Trapped in a hanging position, the boy asphyxiated.

Liam’s April 2005 death prompted an investigation by a federal watchdog agency and a family lawsuit against the crib’s manufacturer, Simplicity Inc.

Related links
Crib safety — What you need to know Video

Liam Johns died after the drop rail of his crib detached and his head got caught between the rail and the mattress. (Family photo)
Hidden Hazards: Dangerous cribs
What went wrong in the crib
Deadly crib Photo
Dangerous cribs Photos
Photo demonstration: What to look for
Resources: Keeping your kids safe
Recall notice from Consumer Product Safety Commission
Information on crib recall from Simplicity
Deaths spur huge crib recall
Tougher standards could boost safety
What do to
Consumers who have one of the cribs cited in the recall should contact Simplicity (888-593-9274 or simplicityforchildren.com) to obtain a repair kit with new hardware. If the crib already has the newer hardware (see attached graphic), consumers should still check the crib’s drop rail to ensure it is assembled right-side up.

Dangerous cribs

Related items:
• Story: Missteps delayed recall
• Video: Need to know
• Graphic: What to look for
• Photo gallery

For parents:
• Main page
• Deadly toys
• Car seat dangers
• Safety resources
• Latest recall news
• Send in your stories
• More stories

But the company and the Consumer Product Safety Commission didn’t warn parents across the country about the potentially fatal flaw in Simplicity cribs–not after Liam suffocated, not after more complaints about the crib rails and not after two more infants died.

Once the Tribune began questioning the company and the agency this month, a massive recall of Simplicity cribs followed.

On Friday, the CPSC took action on 1 million cribs, including the model that the Johns family used for Liam. It is the largest recall of full-size cribs in the agency’s history.

In its Hidden Hazards series, the Tribune has documented how the understaffed and sluggish CPSC fails to protect children from dangers in toys and other products. The paper’s examination of Simplicity’s popular cribs underscores that, even in the aftermath of a child’s death, the agency can fall short in its watchdog role, leaving children vulnerable to a documented hazard.

Interviews and records show that the federal investigator assigned to Liam’s death failed to inspect the crib in his initial inquiry and didn’t track down the model or manufacturer.

“We get so many cases,” the investigator, Michael Ng, said in an interview this month. “Once I do a report, I send it in and that’s it. I go to the next case. We could spend more time, but we are under the gun. We have to move on.”

Only last week, after inquiries by the Tribune, did Ng return to California to find the crib. It had first been held as evidence by sheriff’s police and later was put in storage by a lawyer retained by the family.

Even with the recall, it remained unclear why it took so long to address the problem. The CPSC often gets bogged down in negotiations with companies over recalls because fedx eral law limits its powers and its ability to disclose details of its investigations into dangerous products.

Nancy Cowles, a child-product safety advocate and executive director of Kids In Danger, called for congressional hearings to look into the delay. “Was it because the CPSC has no power and the company was able to stall?” she asked.

When first presented with the Tribune findings this month, Julie Vallese, spokeswoman for the CPSC, said the agency could not comment about Simplicity. “We have more than one investigation open, and that’s why I can’t answer any questions,” she said.

In announcing the recall Friday, the CPSC blamed a flawed crib design and hardware that allowed parents to install the drop rails upside down, which can cause the rail to detach from the frame. The agency said it was aware of seven non-fatal cases of infants being trapped and 55 other cases of drop-rail problems.

It also linked the Simplicity cribs to three deaths but did not release the names of those children or the dates of the fatal accidents.

One of those children was Liam Johns, records show. Another was 6-month-old Edward Millwood, who died in November 2006 in Georgia. The third was 8-month-old Royale Arceneaux, who died in February in Houston. All three children fell between the mattress and a separated drop rail.

The drop rails in those deaths had been installed upside down. But the agency also found two incidents in which correctly installed drop rails failed to work properly.

Ken Waldman, president of Simplicity Inc., said in an interview Friday that the company makes safe products and works closely with the CPSC to fix any problems. He would not say why the recall did not occur earlier.

“This is the thing to do and that’s why we decided to do it now,” he said.

The Aspen 3 in 1, once Simplicity’s best-selling crib, accounted for the bulk of the recall. About 600,000 of those models, which are no longer made, were recalled.

Best answer:

Answer by bobdaMoFobuildr
fuck that i rather get 2!!! =]

Add your own answer in the comments!