Scientists have found that it's always best to have a control group. Why? Let's say you are measuring whether drinking soda makes people smarter. You get a bunch of kids who don't drink soda, and give them a test. Then you have them drink lots of soda for a few weeks and have them take a similar test. You notice that their scores have gone up. Wow, did you just prove that soda makes you smarter? Not exactly. It could be that those kids had been studying on their own, or learning stuff in school that helped them on the test. A better experiment has a control group. In this case, it would be a second group of kids from the same place whom you test but who don't drink the soda. If their scores don't go up, then you've just figured out that soda is the real cause.
Which of these would provide the best evidence that drinking soda makes people smarter?
A
The soda-drinking group does not show improved scores while the control group does.
B
The control group’s scores do not improve while the soda-drinking group’s scores do.
C
Both the control and soda-drinking groups scored exactly the same on the second test.
D
The control group scored higher than the soda-drinking group on the first test.

Answers

Answer 1

Answer:

b is correct since their grades/scores inprove.


Related Questions

Samuel Adams and the Boston Sons of Liberty carried out the Boston Tea Party because-

Answers

Answer: Answer 2. They desired to let King George ll know they would no stand for the Tea act.

Explanation: Brainliest would be nice :)

The Tea Act of 1773 (13 Geo 3 c 44) was enacted by the British Parliament.  Hence Option B is correct .

What was the Tea Act ?

The main goal was to help the British East India Company, which was in financial problems, survive by reducing the enormous amount of tea it was keeping in its London warehouses.

Another goal was to reduce the cost of smuggled tea into Britain's colonies in North America. This was done in an effort to persuade the colonies to buy Company tea, on which Townshend duties were paid, and therefore implicitly affirm Parliament's right to levy taxes.

For Britain and the East India Company, smuggled Dutch tea accounted for around 86% of all the tea consumed in America at the time, making it a significant problem.

The law provided The Townshend Acts' tax, which was levied and collected in the colonies, was still in effect, but the Company was granted the authority to directly sell its tea to North America and the right to duty-free tea exports from Britain. On May 10, 1773, it gained the royal seal of approval.

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The soil in the Middle colonies was not very fertile.

True
False

Answers

Answer:

false

Explanation:

Answer:

False

Explanation:

8. Which crop that was destroyed by famine saw the flight of many Irish to the U.S.?
Corn
Bean
Rice
Potato

Answers

The answer is Potato.

Why was Egypt abel to have a postel system​

Answers

Answer:

Ancient Egyptians developed a postal service that dates back to 2000 B.C.; the oldest postal system in the world. The main mode of transportation was through the Nile River. The letters were placed in a box escorted by guards. At the time, the postal services were exclusive to the pharaohs. The postal museum displays messaged between Amenhotep and Akhenaten where they would update each other on political developments. As the methods of transportation developed, so did the post delivery service. The Ptolemaic era, 305 B.C., a new method of transportation was introduced. Carriers would deliver messages with the help of horses. This era also had the earliest documentation of what is now known as “express mail” and “regular mail”. The express mail services were exclusive to state officials and rulers while the latter was used by the wider public and was delivered by a postman on a donkey or mule.

How did the British change their war strategy after the Battle of Saratoga? They worked to bring the South under their control. They allied with the French in the North. They tried to negotiate peace with the patriots. They developed alliances with Southern patriots.

Answers

After the colonial army victory at Saratoga, the British worked to bring the south under their control.
Recruited British loyalists to strike at the local patriot militias. Patriots near the frontiers rose up against the British led loyalists in bloody battles away from coastal strongholds.


Answer:

the answer is A

Explanation:

:)

____'s Gospel traced Jesus' genealogy back to Adam, but ____'s Gospel traced it back to ____.

15 points, and I'm in a test :')

Answers

Answer:

Luke's, Matthew's, Abraham

Explanation:

- _____________
- Sherman Anti-Trust Act
- Expand markets
- Capital accumulation

Which word below best completes the list above?

Answers

Answer:

The best completes the list above is Sherman Anti-Trust Act.

Explanation:

The Sherman Antitrust Act was passed in 1890 to shorten the successions of power that intervene with commerce and lessen the economic struggle. It condemns both legal cartels and struggles to acquire any part of the trade-in the United States.

The Act's objective was to encourage economic rationality and competitiveness and to manage interstate commerce.

PLEASE HELP!!

Abigail Adams is known as supporting the patriots. What else does she speak up for? ​

Answers

Answer:

woman's education

Explanation:

After Jamestown was settled and they grew wealthy from the ____________________.
Fill in the blank

Answers

Answer:

Tobacco

Explanation:

Other possible answers could be:

Free Labor

Lumber

Fish

What Social problems emerged during the Gilded Age?

Answers

Answer:

-child labor

-Immigrants

-Urbanization

Explanation:

What are slave pens?

A. Something slaves could use to write with

B. Nice homes for slaves to live in

C. Another name for plantations

D. Large compounds for holding slaves

Answers

Answer:

D

Explanation:

Slave pens were buildings in which slaves were imprisoned and prepared for sale; so based on this, D was the closest answer

Hope this helps!

why is it so important for us to remember what soldiers experience over the course of the war or any other conflict​

Answers

Answer:

because they died for the country

Explanation:

Because they gave there life for the country and fought for years on end, when they came home they were still fighting with their mind a lot of soldiers got depression and anxiety from war, we must remeber there courageous acts for these reasons

According to the passage, why was the Magna Carta originally written?

a.to be the foundation of the British Constitution
b.to provide protection for the rights and property of the nobility
c.to protect the liberties of all people in feudal England
d.to provide all citizens with the right of due process

Answers

Answer:

B.

Explanation:

i took a guess and it ended up being right for me lol

Answer:

B i just took the assignment

Explanation:

Which idea in the Constitution is based on the rule of law?

Answers

Answer:

c

Explanation:

Answer:

c

Explanation:

Out of the following, who did not represent Pennsylvania at the Constitutional Convention?

Thomas Mifflin
William Penn
Gouverneur Morris
Benjamin Franklin

Answers

Answer:

Gouverneur Morris was not a delegate for Pennsylvania.  He was a delegate for New York.

Explanation:

What government decisions were the colonists now allowed to do?

Answers

Voting is the answer

Which statement best explains why early humans were nomads?
They were curious about exploring new lands
Their farming methods had exhausted the soil
They were searching for recourse necessary to live
Overpopulation made their living conditions crowded

Answers

Answer:

Correct answer is They were searching for recourse necessary to live.

Explanation:

First option is wrong as early humans weren't that curious to research and exploit lands, as their routine was based on surviving.

Second option is wrong, as they weren't farmers, but hunters and food gatherers.

Third option is correct as they would move to find a place where they could hunt, gather food and find a shelter.

Fourth option is wrong because there was no overpopulation. Actually, most of the Earth was inhabited.

Answer: They were searching for resources necessary to live.

Explanation:

What radically changed about the spread of information in the 1440s?

Answers

Answer:

The Printing Press by German Johannes Gutenburg

Explanation:

Answer:

the printing press

Explanation:

Which sources do the conspiracy theorist (moonlanding deniers) use?​

Answers

Answer:

1.“There’s no wind on the Moon, so how come the flag was blowing in a breeze?”

2. “The photographs taken on the Moon don’t show any stars in the sky!”

3. “The astronauts should have been killed by the lethal radiation of the van Allen Belts! Their space ship would have needed six feet of lead shielding!”

4. “The Lunar Module was made of tinfoil and sticky tape and doesn’t look like a real spaceship!”

5. “There’s a letter C on on of the Moon rocks (movie props are numbered and lettered so the stagehands know where to place them)!”

Explanation:

I NEED HELP!!!!!!!!!!!!!!!!!!!!!!Which of the following is NOT a reason why the 21 Trustees believed the Salzburgers would make good members of the Georgia colony?
A.They were against slavery.
B.They were known as fierce (strong) soldiers.
C.They were peaceful.
They were hardworking.
D. They were hard working

Answers

Answer:

I think it is A

Explanation:

How did the intolerable acts cause tension between the British and the American colonists?

Answers

Answer:

The intolerable acts caused tension because

Explanation:

The colonists felt they were being treated unfairly because they were being taxed without any say in the matter. Britiain kept on doing it because they needed to repay war debts.

. Briefly describe one similarity between the economy of the Chesapeake colonies and the economy of the middle colonies

Answers

Answer:

Both the economies of the middle colonies and Chesapeake were based on agricultural production for export. Both the middle and Chesapeake colonies had to pay taxes to England (the response must mention either the Navigation Acts or the mercantilist system).

I only have 1 hour to finish this i need help I'm tired and I did not get enough sleep​

Answers

Answer: The treaty of Versailles Made Germany acknowledge that they were responsible for the damages and were made to pay them ( Option A)

Explanation:

What argument used to justify slavery appealed to people's religious beliefs?
A. Slaves were naturally unable to take care of themselves and
needed masters.
B. Slavery was mentioned in the Bible.
C. Slaves who were freed and given votes would hurt democracy.
D. Slaves had better lives than many free factory workers.

Answers

Answer:

D,, slaves had better lives

Explanation:

ap3xxxxx

Slavery was justified by appealing to people's religious beliefs by claiming that slaves had better lives than many free factory workers. Option D is correct.

What are the religious beliefs?

Religion is a collection of cultural systems, belief groups, and worldviews that link up the humanity to spirituality. Many religions have narratives, signaling, practices, and divine histories that are meant to afford significant to life.

Slavery was justified by religious beliefs, with slaves living better lives than many free factory workers.

Therefore, option D is correct.

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Why is Pompeii so important?

Answers

Answer:

Explanation:

The city of Pompeii is famous because it was destroyed in 79 CE when a nearby volcano, Mount Vesuvius, erupted, covering it in at least 19 feet (6 metres) of ash and other volcanic debris. The city's quick burial preserved it for centuries before its ruins were discovered in the late 16th century.

Why is the Battle of Saratoga considered a turning point in the Revolutionary War?
F. The British victory extended the fighting for another year.
G The American defeat led many soldiers to desert the Continental army. .
H The British defeat marked the beginning of a steady decline in British military superiority
The American victory convinced France to ally with the United States.

Answers

Answer:

The American victory convinced France to ally with the United States.

Explanation:

what protects humanitarian aid workers during times of war ?

Answers

Answer: The Geneva Convention

Explanation: That is the answer that is all i have to say

Answer:

d

Explanation:

on edge 2020

to what extent were the articles of confederation a successful government?

Answers

Answer:

Government successfully waged a war for independence against the British. Government negotiated an end to the American Revolution in the Treaty of Paris, signed in 1783. Government granted the free inhabitants of each state “all the privileges and immunities of free citizens in the several states.”

Explanation:

help
About blank of white Southerners owned large plantations with more than fifty enslaved workers.
blank belonged to the merchant class, along with doctors and lawyers.
blank were in the lowest class in Georgia during the antebellum era.
blank made up the top group on the Southern social ladder.

Answers

Answer:

About  

✔ 1 percent

 of white Southerners owned large plantations with more than fifty enslaved workers.

✔ Artisans

 belonged to the merchant class, along with doctors and lawyers.

✔ Enslaved workers

 were in the lowest class in Georgia during the antebellum era.

✔ Planters

 made up the top group on the Southern social ladder.

WHAT ACTIONS DID THE U.S. TAKE
on the Iran hostage crisis

Answers

Answer:

we sent one naval ship to track the hostage and once found we waited until hostage escaped and took aboard then Iran ship was captured.

Explanation:

I was on the naval ship at the time serving in the air force k-9 unit and still do, I was deployed that day and this was how we did it. Although I have no plans on going on another ship.

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According to the map below, which of the following statements best describes water scarcity in the Middle East?A. Water scarcity is not an issue for people in the Middle East.B. Water scarcity is a bigger problem for people in the Middle East than for people who live in Africa.C. Water scarcity in the Middle East is caused by climatic issues.D. Water scarcity in the Middle East is caused by a lack of funding for water treatment plants, wells, and other water services. 2. The British used Fort Loudon to trade with which Indian tribe? twinks are a social experiment Barbara____rubia. Whats the missing word Please help im actually crying rn give step by step Which geologic process most likely caused the formation of the Mount St. Helens Volcano?transform faultsrift zonesdiverging boundariesconverging boundaries A chemical reaction produces 56.2 grams of iron (II) sulfide (FeS). How many moles of iron (II) sulfide does the reaction produce? (1 mole FeS = 87.92 grams FeS) *1.00 moles FeS2.50 moles FeS0.639 moles FeS4.98 moles FeS Lorena calculated the slope of the linear function that is represented by the table of values as shown.xy1015827639451263m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction = StartFraction 63 minus 51 Over negative 2 minus (negative 4) EndFraction = StartFraction 12 Over negative 6 EndFraction = negative 2.What did she do wrong?She used the wrong formula for slope.She used the wrong points to determine the slope.She made a mistake when she subtracted x 1 from x 2.She made a mistake when she subtracted y 1 from y 2. Lewis Dot structure for N2?PHOTO ABOVE Is not D I got it wrong What is the unit price of a 6 ounce tube of toothpaste that costs $3.78. Round to the nearest cent if necessary. Address this letter by putting the commas in the right places.Mrs. M. Mouse 1313 Disneyland Drive Anaheim CAChoose 1 answer:Mrs. M., Mouse, 1313, Disneyland Drive Anaheim, CABMrs. M. Mouse, 1313 Disneyland Drive, Anaheim, CAMrs., M. Mouse, 1313 Disneyland, Drive Anaheim CA What is the value of r for 19 and 20? Based on this chart, which of these statements is MOST LIKELY true?A)Spanish settlement of Latin America resulted in a high percentage of Roman Catholics.B)Immigrants from other countries created a religious melting pot in Latin America.C)Most people in Latin America do not adhere to a particular religion.D)Bolivia does not allow the practice of unofficial religions. In your opinion, is it acceptable to banbooks or information on the internet? Give anexample. (hurry will give brainliest)What element that has 5 Valence Electrons and 4 energy levels? What is the ozone layer?A.thin layer in the lower atmosphere that protects Earth from ultraviolet raysB.thin layer in the upper atmosphere that protects Earth from ultraviolet raysC.thin layer in the upper atmosphere that protects Earth from supersonic raysD.thin layer in the lower atmosphere that protects Earth from supersonic raysv Please helpA populations instantaneous growth rate is the rate at which it grows for every instant in time. Function r gives the instantaneous growth rate of a fruit fly population x days after the start of an experiment. 8x+12-8x+15+15x-22-x whats 99 how do you get the answer Where does the energy within the greenhouse effect originate?from convection within the atmospherefrom the circular movement of hot and cold airfrom solar radiation entering the atmospherefrom the conduction of heat from the ground to the air