Answers
answer and the explanation is on the picture.
hope it helps.
Related Questions
Use this graphic to answer the question.
The program coordinator at a fabric store teaches a basic sewing class on the weekend. What two steps are necessary to ensure that the button will easily slip into a buttonhole?
2 and 5
2 and 4
4 and 6
5 and 6
Answers
To ensure that the button slips easily into a buttonhole, follow 2 and 4:
Sew the buttonhole: The program coordinator needs to carefully sew the buttonhole in the fabric, ensuring that it is the right size for the button to fit easily. The buttonhole should be securely stitched but not too tight.
Position the button: Once the buttonhole is sewn, the program coordinator needs to properly position and attach the button to the garment. The button should align with the buttonhole, allowing for easy insertion and secure fastening.
Therefore, the correct answers are 2 and 4.
1.278 x 10-13 – 1.021 x 10-10
Answers
Answer: 2.57x−23
Explanation: Hope this helps! :)
Answer:
2.57x−23 or -20.43
Explanation:
Not sure if it's an x or a multiplication sign.
Why would the mixing of salt water with fresh water be considered an
example of increased entropy?*
Answers
freshwater the salt is able to attract
more heat or absorb it. The salt also
has the ability to lower the water's
freezing point. With all this it increases
the temperature which increases the
entropy. The constant mixing of salt
and freshwater causes disorder in
Mono Lake, which results in a higher or
increased entropy
Pls The electronic configuration of an element is given below.
Element 1: 1s22s22p4
Which statement about the reactivity of the element is true?
It is reactive because it has to gain an electron to have a full outermost energy level.
It is unreactive because it has to lose an electron to have a full outermost energy level.
It is reactive because it has to gain two electrons to have a full outermost energy level.
It is unreactive because it has to gain two electrons to have a full outermost energy level.
Answers
The last one
Bandura found that children who witnessed aggressive behavior being punished were far more likely to be aggressive than children who did not.
Answers
Please help with detail. This is for an assignment
Thanks
Answers
Using uranium-lead dating Note that the age of the igneous intrusion is approximately 5.46 billion years old.
How did we arrive at that ?
To calculate the age of the igneous intrusion,we can use the following equation.
t = n * t_1/2
where:
t = age of the igneous intrusion
n = number of atoms of lead-207
t_1/2 = half-life of uranium-235
t = 4,375 * 0.704 billion years / 625
= 5.46 billion years
So relative dating is a method of determining the relative age of rocks or other objects by comparing their position in a rock layer or other stratigraphic sequence.
In this case, the igneous intrusion is 5.46 billion years old. This is much older than the space probe, which was constructed in 1977.
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what does it mean that we can apply sociological research to the group but not to the individual?
Answers
Answer:
is the way of life of a particular group of people, including the characteristics that make it distinct from other groups."
What should be placed on a fender to prevent damage to the vehicles finish?
A. Clean rags
B. Floor mats
C. Steering wheel covers
D. None of the above
Answers
The car fender covers should prevent damage or protect the fender from damage. Hence, none of the above, option D is correct
What is a Fender?The curving area of the car's body that rests over and protects the wheels is known as a fender.
A fender serves a rather straightforward role. Its function is to prevent the tires from hurling mud, boulders, and other roadside detritus into the air. To put it another way, the fender serves as a container for the wheels to keep road debris within. If the wheels were uncovered, the rotating tires would kick up a variety of debris.
The fender shields your automobile from damage from road debris as well as from this debris being thrown up at other moving vehicles. This is why laws frequently mandate the installation of fender flares on cars with massive, larger tires.
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Which term describes the movement of air caused by differences in air pressure?
Answers
Answer:
Wind
Explanation:
Which place of tye following best fits unit 1 of AP Human Geography and why: Turks and Caucos, British Overseas Territory/ Edinburgh, Scotland/ Dresden, Germany/ Cuenca, Ecuador/ Suva, Fiji/ Seoul, South Korea/ Stockholm, Sweden/ Cape Town, South Africa/ Beijing, China/ Barcelona, Spain/ Sydney, Australia/ or Philidelphia, PA
Answers
Answer:The best place that fits Unit 1 of AP Human Geography would be Philadelphia, PA. AP Human Geography is the study of human populations, their characteristics, patterns, and interactions with the environment. Philadelphia, as a major city in the United States, offers a rich context for exploring various topics covered in Unit 1, such as population distribution, migration, urbanization, and cultural landscapes.
Philadelphia has a diverse population with a mix of ethnicities, cultures, and socioeconomic backgrounds, making it an excellent case study for examining human population patterns and the factors that shape them. The city's history, including its role in American independence and its industrial development, provides opportunities to explore topics related to political geography and economic activities.
Additionally, Philadelphia's urban environment allows for the study of urban geography, including issues like urban sprawl, gentrification, and urban planning. The city's transportation systems, infrastructure, and land use patterns can be analyzed to understand human impacts on the physical environment.
Moreover, Philadelphia is home to numerous educational and research institutions, including universities and museums, which can serve as valuable resources for studying human geography. Students can access data, conduct field studies, and engage in firsthand research on various aspects of human geography.
Overall, Philadelphia offers a diverse and dynamic setting for exploring the key concepts and themes of Unit 1 in AP Human Geography. Its historical significance, cultural diversity, urban environment, and availability of resources make it a suitable choice for studying human populations and their interactions with the environment.
Based on the information in this excerpt, what is Samuel Kercheval's point
of view toward Bacon and his followers?
(A) They were dangerous men who threatened colonial stability and
prosperity
(B) They were frustrated men who were taking action because the gov-
ernment did not
(C) They were allies of the governor who carried out actions that he
supported
(D) They were a primarily political movement that wanted Bacon to
become governor
Answers
What societal groups did Christianity appeal to
Answers
The poor - they have a promise of a “reward” in heaven if they obey Church and King.
The Church and King - it provided them with great temporal power. Ever hear of the Divine Right of Kings?
Those people that Xtian armies or “missionaries” held at sword point and gave them the choice of convert or die.
Determine the value of the annuity for the indicated monthly deposit amount, the number of deposits, and the interest rate. You will need to determine the value for r to solve this problem. When finding r round it to the nearest ten thousandths. Deposit amount: $150; total deposits: 24; interest rate: 3%, compound monthly. The value for r is:____ The value of the annuity is $____
Answers
Answer: To find the value of the annuity for the indicated monthly deposit amount, number of deposits, and interest rate, we can use the following formula:
```A = PMT * ((1 + r/n)^(nt) - 1) / (r/n)```
Where:
- A is the value of the annuity
- PMT is the monthly deposit amount
- r is the interest rate
- n is the number of compounding periods per year
- t is the total number of years
In this case, the values are:
- PMT = $150 (monthly deposit amount)
- r = 0.03 (interest rate)
- n = 12 (compounding periods per year)
- t = 24/12 = 2 (total number of years)
Substituting these values into the formula above, we get:
```A = $150 * ((1 + 0.03/12)^(12*2) - 1) / (0.03/12)```
Simplifying this expression gives us:
```A = $150 * (1.0275^24 - 1) / 0.0025```
Evaluating this gives us:
```A = $3,789.09```
Therefore, the value of the annuity is $3,789.09.
To find the value of r, we can rearrange the formula above and solve for r:
```r = n * (((A * (r/n)) / PMT) + 1)^(1/(n*t)) - n```
Substituting the values we have, we get:
```0.03 = 12 * (((3789.09 * (0.03/12)) / 150) + 1)^(1/(12*2)) - 12```
Solving this equation gives us:
```r = 0.0330```
Rounding to the nearest ten thousandths as requested, the value of r is 0.0330.
Step1: Read the following scenario and answer the discussion questions provided using one of the submission options listed:
You live in a megacity. Currently, the city is experiencing a strain on the services provided to citizens. An urban development committee has been formed to discuss the creation of a “new city.” As a concerned citizen, you plan to attend the public hearing to discuss the pros and cons of this new city. To prepare your comments, answer the following questions.
What are TWO opportunities that can arise from rapid urbanization?
What are TWO problems that can arise from rapid urbanization?
Cite examples of cities that have experienced positive and negative aspects of urbanization.
If you could offer recommendations to the developers for making the new city more sustainable, what would you suggest, and why?
Step 2:To present your ideas, choose from ONE of the following options:
Write a speech that you would give during the meeting. Be sure to write it in a persuasive tone and acknowledge your audience.
Record yourself giving a speech addressing your concerns.
Create an infographic explaining your ideas and answering the questions.
Create a PowerPoint presentation explaining your ideas and answering the questions.
Answers
Economic growth: Urbanization can provide economic opportunities for people, as cities are centers of industry, commerce, and trade. Rapid urbanization can lead to the growth of new businesses and industries, which can create jobs and contribute to the overall economic development of the city.
Improved access to education and healthcare: Cities often have more resources for education and healthcare, with more schools, hospitals, and clinics available to residents. Rapid urbanization can lead to the creation of new schools and hospitals, which can provide better access to education and healthcare for people living in the area.
Two problems that can arise from rapid urbanization are:
Overcrowding: As more people move into cities, the population can quickly outstrip the capacity of the city to provide services such as housing, transportation, and sanitation. This can lead to overcrowding, which can cause a range of problems such as increased pollution, traffic congestion, and social tensions.
Environmental degradation: Rapid urbanization can lead to environmental degradation, as more land is developed and natural habitats are destroyed. This can lead to problems such as air and water pollution, loss of biodiversity, and increased greenhouse gas emissions.
Examples of cities that have experienced positive and negative aspects of urbanization include:
Positive: Tokyo, Japan, has experienced rapid urbanization, which has led to economic growth, improved infrastructure, and better access to education and healthcare.
Negative: Mexico City, Mexico, has experienced rapid urbanization, which has led to overcrowding, traffic congestion, and pollution.
If I could offer recommendations to the developers for making the new city more sustainable, I would suggest the following:
Design the city for walkability and public transportation: Encourage the use of public transportation and prioritize the creation of pedestrian-friendly areas. This can reduce the number of cars on the road, which can help to reduce pollution and traffic congestion.
Focus on green spaces and renewable energy: Incorporate green spaces into the design of the city, such as parks and gardens, and prioritize the use of renewable energy sources such as solar and wind power. This can help to mitigate the environmental impact of the new city and make it more sustainable in the long term.
To present these ideas, I would create a PowerPoint presentation explaining the opportunities and challenges of urbanization, using examples from other cities around the world. I would then present my recommendations for making the new city more sustainable, using visual aids and persuasive language to make my case.
Rapid urbanization brings about a transformational landscape, fostering economic growth, technological innovation, and cultural diversity.
How does rapid urbanization create various opportunities?The influx of people into cities drives demand for goods and services, stimulating job creation and investment. Additionally, urbanization acts as a catalyst for advancements in infrastructure, transportation, and communication systems, propelling societies towards a more interconnected and efficient future.
The mixing of diverse backgrounds in urban settings fosters cultural exchange, artistic expression, and cross-disciplinary collaboration, contributing to a vibrant and dynamic societal fabric.
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Of what did the Franciscans take a vow?
Answers
Answer:
Franciscans take the vows of poverty, chastity, and obedience.
Obedience is the vow to obey the will of God in the service of the community, the Church, and the self.
Explain the degree to which religion may contribute to the diversity within the multinational state shown in Image 2.
Answers
Note that a multinational state is bound to be diverse because it comprises of people of various religious orientation.
How is this so?The multinational state known as India owes a great deal of its diversity to various religions present within its borders including Hinduism, Islam, Christianity, Buddhism and Sikhism; each adherent group bringing forth their distinct culture practices along the way.
It is important not to overlook how these faiths have both fostered unity amongst diverse communities whilst simultaneously contributing towards conflicts albeit few when intersecting with other sociopolitical cleavages such as class or caste divisions
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Consider the following four titrations (a-d):
a. 120 mL of 0.2 M C2H5NH2 (Kb = 5.6×10-4) by 0.2 M HNO3
b. 120 mL of 0.2 M KOH by 0.2 M HNO3
c. 120 mL of 0.2 M HC3H5O2 (Ka = 1.3×10-3) by 0.2 M KOH
d. 120 mL of 0.2 M HNO2 (Ka = 4.0×10-4) by 0.2 M KOH
Part 1
Rank the four titrations in order of increasing pH at the halfway point to equivalence (lowest to highest pH). Use the letters a, b, c, and d to represent the various titrations.
Part 2
Rank the four titrations in order of increasing pH at the equivalence point. Use the letters a, b, c, and d to represent the various titrations.
Part 3
Which titration requires the largest volume of titrant (HNO3 or KOH) to reach the equivalence point? (Enter "none" if no titration requires more than the others.)
Answers
Part 1:
The halfway point to equivalence corresponds to the point where half of the acid or base has reacted with the titrant. At this point, the moles of acid and base are equal and the solution is a buffer solution. The pH of a buffer solution depends on the pKa of the acid and the ratio of the concentrations of the acid and its conjugate base (or the base and its conjugate acid). Using the Henderson-Hasselbalch equation, we can estimate the pH at the halfway point for each titration:
a. C2H5NH2 + HNO3 → C2H5NH3+NO3-
pKa = 10.74
At the halfway point, [C2H5NH2] = [C2H5NH3+], so
pH = pKa + log([C2H5NH3+]/[C2H5NH2]) = 10.74 + log(1) = 10.74
b. KOH + HNO3 → KNO3 + H2O
At the halfway point, [HNO3] = [KNO3], so the solution is neutral and pH = 7.
c. HC3H5O2 + KOH → KC3H5O2 + H2O
pKa = 4.87
At the halfway point, [HC3H5O2] = [C3H5O2-], so
pH = pKa + log([C3H5O2-]/[HC3H5O2]) = 4.87 + log(1) = 4.87
d. HNO2 + KOH → KNO2 + H2O
pKa = 3.30
At the halfway point, [HNO2] = [NO2-], so
pH = pKa + log([NO2-]/[HNO2]) = 3.30 + log(1) = 3.30
Ranking from lowest to highest pH at halfway point: b, a, c, d (Note that titration b is a strong acid-strong base titration, which does not form a buffer and has a neutral pH at the halfway point.)
Part 2:
At the equivalence point, all of the acid or base has reacted with the titrant and the solution is either neutral or basic, depending on the acid-base strength of the components. For a strong acid-strong base titration, the equivalence point is pH 7. For a weak acid-strong base titration, the equivalence point is greater than pH 7, and for a strong acid-weak base titration, the equivalence point is less than pH 7. Using this information, we can rank the titrations at the equivalence point:
a. pH at equivalence point < 7 (weak base-strong acid titration)
b. pH at equivalence point = 7 (strong acid-strong base titration)
c. pH at equivalence point > 7 (weak acid-strong base titration)
d. pH at equivalence point < 7 (weak acid-strong base titration)
Ranking from lowest to highest pH at equivalence point: a, d, b, c
Part 3:
The volume of titrant required to reach the equivalence point depends on the number of moles of acid or base present in the sample. For a 0.2 M solution of acid or base, the number of moles present in 120 mL is:
moles = concentration x volume = 0.2 x 0.12 = 0.024
Using this information, we can calculate the number of moles
Help pls
According to global data from 2018, Niger had a natural rate of increase equaling 3.8% and Bulgaria equaled −2.8%. What process was used to calculate this statistic?
A) Averaging the fertility rate for the past 100 years
B) Multiplying the crude birth rate by 10
C) Subtracting the crude death rate from the crude birth rate
D) Dividing the crude birth rate by the sex ratio
E) Adding the death rate to the fertility rate and dividing by two
Answers
Note that the possible process that was used to compute the above statistic is "Subtracting the crude death rate from the crude birth rate" (Option C)
What is the rationale for the above response?Note that the natural rate of increase is calculated by subtracting the crude death rate (number of deaths per 1000 population) from the crude birth rate (number of births per 1000 population). This gives the net change in population due to natural factors.
The statistical examination of human populations is known as demography. Demographers evaluate population number, mobility, and structure using census data, surveys, and statistical models.
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What is a source? A. A primary work that is used to find information about a particular topic B. The place where a writer credits the original author C. A notation from the author at the end of the work D. The search engine a writer uses to explore a topic
Answers
Garage door spring has a spring constant of 800 N/m. How much will it stretch if a 200 N force is applied to it?
Answers
Answer:
The garage door spring will stretch 0.250 m.
Explanation:
(IMPORTANT!: Hooke's Law: \(F_{s} = -kx\))
\(F_{s}\) = Spring Forcek = Spring Constantx = Stretch or CompressionFirst, isolate for x:
\(x = -\frac{F_{s} }{k}\)
Second, determine your known values:
\(F_{s} = 200 N\\k = 800\frac{N}{m}\\x = ?\)
Second, plug all known values into Hooke's equation and solve\(x = -\frac{200 N}{800\frac{N}{m} } \\= -0.25 m\)
Which of the following organisms is most likely to be found in a grassland?
A) a bird that nests in trees
B) an animal that burrows
C) a large predatory cat
D) an animal not adapted to cold temperatures
E) large frogs
Answers
Answer:
A large predatory cat
Explanation:
They'd be able to hide in the tall grass and stalk their prey before attacking.
Hope the helps. Have a nice day.
Answer:
B) an animal that burrows
Explanation:
Just took test
How would an increase in both inflation and the unemployment rate be illustrated on the short run Phillips curve
Answers
According to the short-run Phillips curve, both the unemployment rate and inflation rate would be illustrated with an L-shaped curve.
What is the Phillips curve?Phillips curve refers to an economic theory which states that there is an inverse (negative) relationship between the inflation rate and the rate of unemployment in the economy of a particular country and at a specific period of time.
This ultimately implies that, the rate of unemployment and inflation rate have an inverse (negative) relationship (negatively related) in accordance with the short-run Phillips curve.
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1. Ano ang limang rehiyon ng kontinenteng Asya? 2. Magbigay ng tatlong salita na maglalarawan sa bawat rehiyon
pls help I just really need this ASAP
Answers
Answer:
\( \: \)
1. Karaniwang kasanayan sa heyograpikong panitikan na hatiin ang Asya sa malalaking rehiyon, bawat isa ay pinagsasama-sama ang ilang mga bansa. Ang mga physiographic division na iyon ay karaniwang binubuo ng
Hilagang Asya, kabilang ang karamihan ng Siberia at ang hilagang-silangang mga gilid ng kontinente;
Silangang Asya, kabilang ang kontinental na bahagi ng Russian Far East na rehiyon ng Siberia, ang mga isla ng Silangang Asya, Korea, at silangan at hilagang-silangan ng Tsina;
Gitnang Asya, kabilang ang Plateau ng Tibet, ang Junggar at Tarim basin, ang Inner Mongolia Autonomous Region of China, ang Gobi, at ang Sino-Tibetan range;
Gitnang Asya, kabilang ang Turan Plain, ang Pamirs, ang Gissar at Alay range, at ang Tien Shan;
Timog Asya, kabilang ang mga kapuluan ng Pilipinas at Malay, peninsular Southeast Asia at peninsular India, ang Indo-Gangetic Plain, at ang Himalayas; at Kanlurang (o Timog-Kanluran) Asya, kabilang ang kabundukan ng Kanlurang Asya (Anatolia, Armenia, at Iran), Levant, at Peninsula ng Arabia. Minsan ang Pilipinas, ang Malay Archipelago, at peninsular Southeast Asia, sa halip na ituring na bahagi ng Timog Asya, ay magkakahiwalay na pinagsama bilang Timog-silangang Asya. Isa pang pagkakaiba-iba ng mga pangunahing kategorya ang karaniwang ginagawa upang hatiin ang Asya sa mga kultural na rehiyon nito.
Who was Vladimir Lenin?
Answers
Answer:
Russian revolutionary, politician and political theorist
Geographers study cultural traits, ideas, and practices and their diffusion across space and in
places. These traits, ideas, and practices can change through a variety of processes.
A. Describe TWO economic factors that have contributed to similarities between the cultural
landscapes shown in Image 1 and Image 2.
B. Explain how increased Internet access throughout the world contributes to cultural
divergence.
C. Describe a process by which an ethnic food can be modified as it spreads from its country
of origin.
D. Explain the degree to which the process of syncretism affects the cultural landscapes of
New York City and Tokyo.
E. Explain a possible limitation of comparing Image 1 and Image 2 to understand how
population density affects the environment and natural resources in New York City and Tokyo.
*The first photo is in times square new york and the second is shibuya crossing tokyo
Answers
Answer: Geographers study cultural traits, ideas, and practices and their diffusion across space and in places is explained below in details.
Explanation:
Intercommunications among and between cultural characteristics and more comprehensive global organizations can manage to new classes of cultural representation; for example, creolization and lingua franca. These methods come to carry on culture through communications, technological innovation, politics, commerce, and social connections.
Please anyone help me here make a song. the dead line is 1 day later
EX:
Title By: (Name)
In tune of: EX: Ice cream (black pink)
Hi for any administrations taking this question violated to your community service I just want to say I dont know what im doing to do that, I'm just cant find the right subject like Filipino and AP (Aralinks panlipunan) just forgot the spelling. Thank you for reading this and if I get banned for breaking a rule I didn't know well then thats mean that this website was my only one where I get my answers so I'd be never using this again.
Answers
By: (Your name)
In tune of: "Shape of You" by Ed Sheeran
Verse 1:
The summer sun is shining bright
Everything feels just right
The beach is where we'll spend our days
With friends, we'll never be afraid
Chorus:
We'll dance in the summer sun
With sand beneath our feet
Our laughter will never be done
As we soak up the heat
Verse 2:
The waves are crashing on the shore
We'll play in the water more
Our memories will last forever
As we spend time together
Chorus:
We'll dance in the summer sun
With sand beneath our feet
Our laughter will never be done
As we soak up the heat
Bridge:
Our summer love will never fade
As we dance the night away
The stars above will light our way
As we make memories each day
Chorus:
We'll dance in the summer sun
With sand beneath our feet
Our laughter will never be done
As we soak up the heat
Outro:
The summer sun is shining bright
Everything feels just right
We'll make memories that will last
As we soak up the summer sun so fast.
All members of the United Nation 193?
Answers
There are 193 member states in the United Nations.
The United Nations (UN) is a global organization founded in 1945 with the aim of maintaining international peace and security. It has 193 member states and serves as a forum for nations to cooperate on issues ranging from humanitarian assistance and development to human rights and security challenges.
The UN is headquartered in New York City and is comprised of several major organs, including the General Assembly, the Security Council, the International Court of Justice, and the Secretariat. All 193 member states of the UN are represented in the General Assembly, which is the main deliberative body of the organization.
The UN's membership has grown over time, with its most recent member being South Sudan, which joined in 2011. The UN Charter lays out the principles of the organization, including the obligation of member states to maintain international peace and security, respect for human rights and fundamental freedoms, and the promotion of social progress and development.
Through its various programs and agencies, the UN works to address a wide range of global challenges, including poverty, hunger, disease, climate change, and conflict. Its efforts to promote sustainable development and protect human rights are central to its mission, as is its role in promoting international cooperation and understanding.
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Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Solve for
x
9
x
−
8
=
13
Give your answer as an improper fraction in its simplest form.
Answers
Answer:
9x-8 ≥13
9x ≥13+8
9x ≥21
x ≥21 ÷ 9
X ≥ 2.3333
wager me on fn user is notixfree
Answers
AP Stats, One Prop Z-Interval (Working backwards?)
I have the image of the question attached but I’m not sure how to work back from the margin of error. The assumed p-hat is .5 because none is provided and that would give us the largest standard deviation. Looking for n (number of high schoolers)
Answers
The principal would need to sample approximately 384 students.
How the figure was obtainedIn order to estimate the percentage of high school students that plan on attending a four-year college or university with a margin of error of no more than 4% and 96% confidence level, the principal would need to sample approximately 384 students.
This calculation is based on the assumption that the population proportion is unknown and the sample size is large enough to use a normal approximation.
It's also important to note that this is a rough estimate and that factors such as the exact desired confidence level, margin of error and population size may affect the final sample size.
The margin of error is a measure of the uncertainty associated with a sample estimate. It is typically expressed as a percentage of the estimate and is used to indicate the level of precision of the estimate.
The margin of error is determined by the sample size, the level of confidence desired, and the variability in the population from which the sample is drawn.
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