What is the main difference between the null and the research hypothesis? What is the importance of assuming the null hypothesis is true?

Answers

Answer 1

Answer:

The null hypothesis is a general statement that states that there

is no relationship between two phenomenons under

consideration or that there is no association between two groups.

A hypothesis, in general, is an assumption that is yet to be proved

with sufficient pieces of evidence.


Related Questions

What did you include in your response? Check all that
apply.

O The melting of the pieces of chocolate one by one
is evidence that conduction occurred.

O As heat flowed through the foil bridge, heat
transferred to the pieces of chocolate, causing them
to melt.

O The heat transfer occurred between the foil bridge
and the chocolate pieces, which were in direct
contact with one another.

Answers

What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in the transfer of heat through conduction.

Sample Response: The melting of the chocolate pieces one by one showed that it was caused by heat flowing through the foil bridge. The transfer of heat happened between the foil bridge and the chocolate pieces because they were touching each other.

The conduction was made by the foil which was touching the chocolate made the chocolate slowly melt because of the tea light giving heat to the foil the foil conducted it to the chocolate causing it to melt. Thus, option "C" is correct.

What are conduction, convection and radiation?

Conduction refers to the transfer of the energy from one end to the other end from the conducting material. Heat energy, and electric energy all of these can conduct. For example - heat transfer from one end of the road to another.

Convection refers to the process in which heat energy is transferred to the liquid in various manners. For example - a geyser transfers the heat energy to the water.

Radiation refers to the transfer of heat in the form of a heatwave. For example - transferring of heat from the light bulb and heater.

Therefore, the given example can help us to understand the distribution of energy on earth.

Thus, option "C" is correct.

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how to make I love my pet animal in negative sentence​

Answers

Answer:

I never love my pet.

Explanation:

Hope it helped!

Answer:

I don't love my pet . easy

Describe the hearing process​

Answers

So to put this in a question, I would rephrase it to:

How does hearing work?

It's a little tough to ELI5 without using using the names of the particular organs but here goes:

Sound is nothing more than a wave of air pressure. In other words, it fundamentally involves changing degrees of energy-based air pushing and tugging. Additionally, it is because to this that sound cannot travel in a vacuum. When these waves reach your ear, they first come into contact with the "tympanic membrane," which vibrates and transmits these vibrations to the malleus, incus, and stapes, three small bones (Latin for hammer, anvil, and stirrup).

The waves will subsequently be transmitted via the bones' vibrations to the "cochlea," a spiral-shaped organ filled with fluid. The air pressure wave has so undergone many transformations at this point. Air pressure was followed by mechanical vibrations and is now "fluid pressure." The spiral-shaped cochlea is lined with neurons all the way around. Depending on the fluid pressure waves' intensity, frequency, etc., the cochlea will have to travel a particular distance. Based on these fluid waves, these neurons will then activate, sending information to your brain.

Your brain then decodes these messages to produce the "sound" that you hear. Although I'm not convinced this is the greatest ELI5, this is the main idea.

In essence, your ear works as follows:

Air pressure waves enter the ear, transform into mechanical vibrations, transform into fluid pressure waves, which signal neurons and cause those neurons to fire electrical impulses that communicate with the brain the sound you are hearing.

Cheers,

ROR

Answer:

Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.

hy Sophie pl z mark me as brainlist ✌ xd

I had this question for SBI4U

Answers

Answer:

h+ is the part of the rocket that goes and blasts off.

question is in the picture :)

Answers

Answer:

adrenal gland - thyroid

Explanation:

what the incorrectly paired matches should be:

islets of Langerhans - pancreatic cells; pituitary in brain/endocrine system

adrenaline - made in adrenal medulla [in center of adrenal gland]

estrogen - made in ovaries

hope this helps!!

Which of the following changes to Earth is NOT caused by living organisms?

Answers

Answer:

is C, since cars and other non-living organisms release sulphur dioxide into the atmosphere

Which statement best explains why the development of a new area of science can lead to changes in a theory? A.A new area of science attracts new scientists who study old theories for flaws. B.A new area of science promotes experimentation from a different point of view. C.A new area of science allows old theories to be reworded using new terminology. D.A new area of science encourages scientists to replace old theories with modern ones.

Answers

A new area of science promotes experimentation from a different point of view. thus option B is correct.

What is the role of science in daily life?

Cooking, eating, breathing, driving, playing, and other activities all include science. Everything we use and wear, including our brushes, toothpaste, shampoo, talcum powder, and body oils, is a result of scientific innovation. Without all of this, life is inconceivable since it has become essential.

Because everything else explains why a new field of science is developing, which might improve an existing theory but isn't precisely the "best" one, it encourages experimentation from a different angle.

Therefore, option B is most likely your outcome.

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The first step of the scientific method usually involves _______.
Multiple Choice

a. gathering data
b. developing a hypothesis
c. identifying relationships between variables
d. making observations

Answers

Answer:

b. developing a hypothesis

The first step of the scientific method usually involves making observations. Therefore option D is correct.

Observations are systematic and objective observations of the natural world. Scientists use their senses or specialized tools to collect data and gather information about a particular phenomenon or problem.

These observations serve as the foundation for scientific inquiry and help researchers identify patterns, trends, or potential relationships between variables.

From these initial observations, scientists can then move on to formulating a hypothesis (b), which is a testable explanation or prediction based on existing knowledge and observations.

The scientific method guides researchers in a structured approach to understanding the natural world and conducting experiments to test their ideas.

Therefore option D is correct.

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Which substance is an example of organic matter?

Answers

an example of organic matter is sugar because it is the best option

What do stabilizing selection and directional selection have in common?

A. They are both forms of genetic drift.

B. They both decrease genetic variation.

C. They are both caused by female choice.

D. They both favor extreme phenotypes.

Answers

Answer:

they both decrease genetic variation

b) Review the results of your table and summarize your observations about
how the different substances cross membranes. (2 points)

Answers

Substances can enter and exit the cell through the membrane through passive or active transport. The processes of endocytosis and exocytosis ensure, respectively, the entry and exit of macromolecules and other particles.

In which two ways do substances cross the membrane?

The selective passage of substances across the membrane occurs in two different ways:

active transport, when it involves the use of energy.passive transport, when it does not involve the use of ATP.

With this information, we can conclude that substances can enter and exit the cell through the membrane through passive or active transport. The processes of endocytosis and exocytosis ensure, respectively, the entry and exit of macromolecules and other particles.

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Describe an example of a sustainable yield model, other than a forest, that could help you make decisions about how to use your island resources.

Answers

Sustainability is the idea that people may live on Earth and utilise resources without destroying them or affecting future generations. The biological variety, food production, average global surface temperatures, CO2 concentrations, human population, and resource depletion are the five main environmental indicators that might point people in the direction of sustainability.

How can we figure out what yield is sustainable?

The foundation for determining sustainable yield is the ratio of the water level decline in the well to the pumping rate, the amount of drawdown the well exhibits for a particular pumping rate over time, and the recovery rate. Data from aquifer tests are typically more trustworthy the longer they are conducted.

Example is a fish that can be kept alive forever because they can be nourished by the underlying natural system's regenerating abilities.

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the picture holds the question

Answers

The experiment done in Miller-Urey experiment describes that the organic molecule have always existed as well as life on Earth could have originated from inorganic material. The correct options are A and D.

What are organic molecules?

An organic molecule is a complex molecule that is primarily made of carbon atoms bonded with other elements and/or other carbon atoms. All living things on Earth are composed of organic molecules.

The experiment done in Miller-Urey experiment describes that the organic molecule have always existed as well as life on Earth could have originated from inorganic material.

Thus, the correct options are A and D.

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write the structure of root​

Answers

Explanation:

Typical roots contain three different sections, or zones: the meristematic zone, the zone of elongation, and the zone of differentiation. In the meristematic zone, named after the apical meristem, the plant cells undergo rapid mitotic division, creating new cells for root growth.

What do scientists call a disease caused by a pathogen that is easily passed between people?

Answers

Infectious diseases are caused by microorganisms like viruses, bacteria, fungi, or parasites and can spread from person to person.

What are pathogens?

A pathogen is an organism that causes disease in its host, and the severity of the disease symptoms is referred to as virulence.

Infectious diseases are caused by microorganisms like viruses, bacteria, fungi, or parasites and can spread from person to person.

Thus, the disease that scientists call caused by a pathogen that is easily passed between people is infectious diseases.

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Which substance completes passive transport and facilitated diffusion

Answers

Answer: Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane

Explanation:

hope it helps;)

Identify three bodily functions that the nervous system helps to regulate to help maintain homeostasis.

Answers

Three bodily functions that the nervous system helps to regulate to help maintain homeostasis include the release of epinephrine, thyroxine and acetylcholine.

What is Homeostasis?

Homeostasis refers to the state of internal equilibrium of a biological system regarding its association with the surrounding environment.

Hormones are chemical messenger released by the nervous system that help to maintain the homeostasis.

Epinephrine is a hormone that helps the body maintain homeostasis by fighting against allergic reactions.

Moreover, thyroxine is another key messenger that modulates energy levels and growth.

In conclusion, three bodily functions that the nervous system helps to regulate to help maintain homeostasis include the release of epinephrine, thyroxine and acetylcholine.

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How can you explain/describe the inheritance the trait of armor? How might this challenge our understanding of dominance?

Answers

These explain/describe the inheritance the trait of armor might this challenge our understanding of dominance by The developments are encoded with the aid of using one-of-a-kind alleles of the identical gene.

What are traits?

Traits are bodily determined functions of an organism. Each allele is chargeable for a selected phenotype that makes up a trait. A dominant trait is the only one that is expressed over any other in a heterozygous kingdom i.e. the mixed kingdom of the 2 one-of-a-kind alleles that encodes the 2 one of kind developments respectively.

When the 2 one of a kind alleles integrate withinside the organism's genotype, the dominant trait (hornless) will specific itself over its contrasting trait (horn),The allele that encodes hornless-ness is stated to be the dominant allele at the same time as hornless-ness is the dominant trait.

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Describe how the design of a preparation relates to the types of supplemental materials
used in restorative dentistry.

Answers

The design of a preparation relates to the types of supplemental materials

used in restorative dentistry is discussed below:

What is the role of the oral dentist?

Tooth extractions are carried out by dental and oral specialists for various reasons. A painful tooth or a tooth that has been significantly affected by decay may be the problem. Sometimes a dentist will extract a tooth to make room for dental prostheses or other devices.

When the situation becomes increasingly complicated, an oral expert rather than a dental professional may need to extract a tooth. They typically remove wisdom teeth or third molars.

The dental professional or specialist will initially numb the tooth to gradually relax the patient. Even though tooth extraction may still be distressing, it may be essential for relieving dental pain and preventing further problems.

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TLloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?
Wear safety goggles while looking into the opening of the test tube.
Cover the opening of the test tube so that no materials can boil out of it.
Move the test tube so that the opening is pointing away from all students.
Put the test tube in a hot water bath so that no water can enter its opening.

Answers

The action that should be recommended by Lloyd to his partner if the heating must continue is to move the test tube so that the opening is pointing away from all students. Thus, the correct option is C.

What are the precautions that should be taken while heating the solution?

Safety and security are the foremost things that you should be required to keep in mind when performing lab experiments. You should be well aware of all its parameters.

While heating the solution, always keep away your face away from the direct opening of the test tubes, wear goggles if required, etc.

Therefore, the action that should be recommended by Lloyd to his partner if the heating must continue is to move the test tube so that the opening is pointing away from all students. Thus, the correct option is C.

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what are the effects of anaemia

Answers

Answer:

dizziness, weakness , shortness of breath

question in the picture !:)

Answers

Answer:

The membrane that covers the lungs is called the pleura :)

Explanation:

When you dissolve both compounds in water which form of each going to predominate in the solution?

Answers

Answer:

nu știu nu vreau nu pot sczzzz

Symptoms of malaria appears when

Answers

The symptoms do not appear immediately after the entry of sporozoites because hemozoin is not released. Only after the release of hemozoin the malarial symptoms are released. For most people, symptoms begin 10 days to 4 weeks after infection, although a person may feel ill as early as 7 days or as late as 1 year later.

what is the result of hydrogenation of vegetable oils

Answers

Answer:

Explanation:

Since the process of hydrogenation contributes hydrogen atoms to oil, this will reduce the amount of fatty acids and increase the amount of saturated fatty acids in the oil.

I need help with this please :(!

Answers

Answer:

A=fish. b=salamander c=tortoise d=chicken e=rabbit f=human

Explanation:

different fetuses look different ways for each species

Answer:

F is human-C is chicken-B is salamander-E is Tortoise-A is fish -D is rabbit

Explanation:

Which of the following is not a natural hazard?

a
Pollution

b
Landslides

c
Earthquakes

d
Coastal erosion

Answers

Answer:

A.) Pollution

Explanation:

Pollution is not a natural hazard because pollution is mostly created by humans. For the most part, landslides, earthquakes, and coastal erosion are disasters which occur naturally. In other words, humans generally don't cause these hazards, but they are the main contributor to pollution.

A. Pollution because pollution is from humans

A student, who is studying two different cells A and B in cell cycle, notices that cell A has 5 picograms of DNA while cell B has 10 picograms of DNA. Both cells are from the same organism. Which of the following is the best description of the cell cycle stage of each cell?
A. Cell A is in prophase of mitosis; Cell B is in metaphase of mitosis.
B. Cell A is in G1 phase; Cell B is in G2 phase.
C. Cell A is in G1 phase; Cell B is in between G1 and S phase.
D. Cell A is in G2 phase; Cell B is in G1 phase.

Answers

Answer:

As the cell enters meiosis 1, it's DNA replicates in S phase and then reduces to half when the cell splits into two. Hence, the amount of DNA remains 10 pg.

During meiosis 2, there is no DNA replication but only division between cells, leading to 5 pg of DNA in all four daughter cells.

So, the correct option is '10 pg and 5 pg respectively'

Lawmakers discuss methods of preventing pollutants that could directly start a positive feedback loop in the area shown in the picture.

Which of these actions should they take?

A. Pass laws to help decrease soil erosion and fertilizer runoff.

B. Ban the composting of food waste and paper products.

C. Increase funding for coal and natural gas technology.

D. Regulate the number of jets flying in the upper troposphere.

Answers

Answer:

D. Regulate the number of jets flying in the upper troposphere.

Choose all that apply: which resources are most important in the geopolitical landscape?
Group of answer choices

Oil/Fossil Fuels

Water

Gold

Land

Answers

The most important resources for man now in the geopolitical landscape is Oil/Fossil Fuels; option A.

What are resources?

Resources refers to the materials or substances which are used by humans for their needs either directly or indirectly.

Examples of resources are gold, petroleum, coal, wood , water, etc.

The most important resources for man now in the geopolitical landscape is Oil/Fossil Fuels since they are required to many energy dependent processes.

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State five importance of socializat 1The consent form is signed by the participant but is missing the participant's initials in several places. Which strategy helps to prevent this from occurring in the future with other participants? A. Conduct consent interviews in a quiet, separate room with no distractions or interruptions. B. The person obtaining the participant's consent must be present when the form is signed. C. Create and use a checklist to ensure that every detail in the informed consent process is completed. D. All of the above. Students in a reading class have three options for their book project: making a brochure, writing a news article, or designing a computer presentation. from past years, the teacher has determined that 20% of students usually choose to make a brochure, 30% of students usually choose to write a news article, and the remaining students usually choose to design a computer presentation. if the teacher uses 20 colored chips in three different colors to model this situation, how many colored chips should she use to represent each book project option? making a brochure: blue chips writing a news article: yellow ships designing a computer presentation: red chips One forth of one third of two fifths of a number is 15. What is the number? What is the ratio of the circumference of a circle to its radius? How effective is it to submit vendor invoices only? (x^2 + x - 17) + (x 4) divide using polynomial long division what is the value of sin(80)cos(20)-cos(80)sin(20) in oliver twist how does dickens show that asking for more was absolutely against the rules and that oliver was being treated as though he has done something very wrong? In photosynthesis, plants use energy from the sun to produce glucose, c6h12o6 , and oxygen from the reaction of carbon dioxide and water. 6co2 + 6h2o --> c6h12o6 + 6o2 what mass, in grams, of glucose is produced when 3.00 mol of water react with carbon dioxide? What is the theoretical yield of NaBrwhen 2.36 moles of FeBr3 reacts?2FeBr3 + 3Na2S FS3 + 6NaBr[?] mol NaBrRound your answer to the hundredths place Find the value of :[tex] \sf log_{3 \sqrt{2} }(324) [/tex] John walked from his home to work, it took him 12 min and the distance covered was 3 km. calculate the average speed in m/s what are tissues composed of in addition to cells? if someone ask you to write the tens in 1,567 would you write 67 or 6 if someone asks you to write the tens in 145,677 would you write 77 or 7if someone asks you to write the hundredths in 146,888would you write 688 or 8 or 888?? explain pls During prerace, an athlete who weighs 70 kg would need between _____ and _____ g of carbohydrate daily. Qu oracin es impersonal?Naden en el lago si quieren.Se puede nadar en este lago.Las autoridades permiten nadar en este lago.Se renen para nadar en el lago. Use the formula A=bxh to find the base of a parallelogram if the area is 228 cm and the height is 12 cm.O aObOOd19 cm1.9 cm19 cm 2none of the above As fully as you can, explain what ishmael means by "mother culture," and "her" relationship to us as individuals The Islamic prohibition against idols led to the use of which of the following elements in art? stylized floral flourishes (arabesques)calligraphyAll of the choices are correct.geometric patterns