unknown mean μ
yielded x¯
x
¯
= 123 and s = 28. Assume σ
σ
= 25. Construct a 90% confidence interval for

Answers

Answer 1

Answer:

The answer is below

Explanation:

The question is not complete, but I will solve a similar question. The question goes as:

A random sample of n measurements was selected from a population with unknown mean µ and known standard deviation σ. Calculate a 90% confidence interval for n = 49, ¯ x = 28, σ = 28

Solution:

A confidence interval is a range of numbers that contains a population parameter.

C = 90% = 0.9

α = 1 - C = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05

The z score of α/2 is the same as the z score 0.45 (0.5 - 0.05) which is equal to 1.65. Hence, the margin of error E is:

[tex]E=z_\frac{\alpha}{2}*\frac{\sigma}{\sqrt{n} } =1.65*\frac{28}{\sqrt{49} } =6.6[/tex]

The confidence interval = [tex]\bar x \pm E=28 \pm 6.6 = (21.4,\ 34.6)[/tex]

The 90% confidence is between 21.4 and 34.6.


Related Questions

In your words provide a brief definition for "target language"?
Helpppp

Answers

Answer:

the language into which a text, document, or speech is translated

Write a paragraph that makes a point with the help of a strong analogy. Then write a paragraph that uses a weak or false analogy to do the same.

If you’re having trouble thinking of points or arguments to make, consider using one of the following:

Getting rid of all homework
Being a bystander to bullying
Imposing limits on the use of technology
Removing age limits on driver’s tests

Answers

Answer:

https://writingcenter.unc.edu/tips-and-tools/fallacies/

Answer:

Just like a warrior's weapon is a sword, a writer's weapon is a pen. A sword either makes or breaks people, and is either used to kill or protect. It’s the same as how writers use a pen: they write the words in their minds, and these words can also make or break people.

The protagonist in a novel is similar to that of a lion, they both are strong and have claws and teeth. Just as a lion can tear you from limb to limb, a protagonist in a story can metaphorically do the same. The difference is the protagonist uses hurtful words, and other mechanisms, just as a lion uses its teeth and claws to tear apart its prey.

Explanation:

Hope this helps anyone who reads it.

Diagram the lettered blanks with this sentence:

Lying lips are an abomination to the lord but they that deal truly are his delight

Answers

Answer:

Diagramming A Sentence

"Lying lips are an abomination to the lord but they that deal truly are his delight."

a. abomination

b. Lord

c. they that deal truly

d. his

e. delight

Explanation:

Diagramming a sentence helps to identify all the parts of speech in the sentence.  The diagram divides the parts of speech into the subject (noun), predicate (verb), prepositions, objects, prepositional objects, articles, and adjectives.  It is mostly used in teaching written language to make it easy for students to understand and learn the language.

Paragraph on how I am going to spend my holidays. in English for grade 2.

Answers

Answer:

Paragraph writing on how I am going to spend my holidays.

Explanation:

With the holidays upcoming in the next few days, I have planned several activities that I want to get done or experience. The first is to go to my grandparents' farm in the villages and help them out with farm work. I always loved going there for the holidays and even this year won't be any different. I will be there for the whole duration of the holidays. Then, I also planned to walk around the village and help out any in their house repairs, or their farm work. There's also the plan to go into the nearby forest and see how the birds and animals are, what type of species are still there, and just try to enjoy nature. My whole holiday plan involves me being there in the village instead of staying in the city and getting bored. Besides, it's always nice to be with my grandparents and enjoy their company.

Q2a). State TWO (2) assumptions of using the Rational method for computing runoff.

b). Explain eachof the following terms in relation to determining storm runoff.
i. Time of concentration
ii. Runoff coefficient
iii. Return period

c).With the aid of a sketch, explain a hydrograph.​

Answers

Q2a). State TWO (2) assumptions of using the Rational method for computing runoff.

b). Explain eachof the following terms in relation to determining storm runoff.
i. Time of concentration
ii. Runoff coefficient
iii. Return period

c).With the aid of a sketch, explain a hydrograph. Bc c. F d wmakskd
Hchysyfrograoh cmfmjekwkx
Hope it helps
C ndjwjncbbbhgwjahcow

Which of the following is the most reliable online source?
A) The blog of a mother who shares anecdotal evidence of the harmful
effects of vaccinations: www.novaccinesplease.blog
B) A popular science magazine that charts developments and trends in
vaccinations over the last twenty years
C) The website of the Center for Disease Control and Prevention,
which is the federal agency that protects public health and safety:
www.cdc.gov
D) A parenting magazine website article on the controversies of
vaccinations: www.parents.com

Answers

C) The website of the Centres for Disease Control and Prevention, the federal organisation responsible for safeguarding public health and safety, is the most trustworthy online source.

1. When it comes to researching information about vaccinations, it is important to consider the reliability of the source.

2.  In this case, the most reliable online source would be the website of the Center for Disease Control and Prevention (CDC), which is the federal agency responsible for protecting public health and safety.

3.  The CDC is a reputable source of information, with its content based on scientific evidence and reviewed by experts in the field.

4. The website provides up-to-date information on vaccine-preventable diseases, vaccine safety and effectiveness, and recommendations for vaccination schedules.

5. On the other hand, the blog of a mother sharing anecdotal evidence of harmful effects of vaccinations or a parenting magazine website article on the controversies of vaccinations may not provide accurate and evidence-based information.

6. While a popular science magazine may provide reliable information, it's important to consider the credibility of the publication and the sources it cites.

To learn more about federal please click on below link

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Why do you think that Bradstreet chose to write about her emotions as well as her
beliefs?

Answers

Why would anyone want to let out their emotions and beliefs?

Explanation:

I have no idea who Bradstreet is but any human being would let out their beliefs and write about their feelings in order to feel free,be understood, motivate and support the one's in a similar situation to them.

It is not usually news, when another old cave is discovered in the South of France. Rather, it is an ordinary event. Such discoveries are so frequent these days that hardly anybody pays heed to them. However, when the Lascaux cave complex was discovered in 1940, the world was amazed. Painted directly on its walls were hundreds of scenes showing how people lived thousands of years ago. The scenes show people hunting animals, such as bison or wild cats. Other images depict birds and, most noticeably,horses, which appear in more than 300 wall images, by far outnumbering all other animals. Early artists drawing these animals accomplished a monumental and difficult task. They did not limit themselves to the easily accessible walls but carried their painting materials to spaces that required climbing steep walls or crawling into narrow passages in the Lascaux complex. Unfortunately, the paintings have been exposed to the destructive action of water and temperature changes, which easily wear the images away. Because the Lascaux caves have many entrances, air movement has also damaged the images inside. Although they are not out in the open air, where natural light would have destroyed them long ago, many of the images have deteriorated and are barely recognizable. To prevent further damage, the site was closed to tourists in 1963, 23 years after it was discovered.

1. Why is discovering a cave considered an ordinary event?
2. What did the paintings on the walls of Lascaux cave depict?


Correct answer- Brainliest!
Plz help!

Answers

Answer:

1. Discovering a cave is an ordinary event as such discoveries are so frequent that hardly nobody pays heed to them.

2. The paintings on the walls of Lascaux cave depict "people hunting animals, such as bison or wild cats. Other images depict birds and, most noticeably, horses, which appear in more than 300 wall images, by far outnumbering all other animals."

Explanation:

In the given passage, the speaker talks of how caves often discovered are not a strange or extraordinary event. The answers to the given questions are as follows-

1. Discovering a cave is an ordinary event as such discoveries are so frequent that hardly anybody pays heed to them.

2. The paintings on the walls of Lascaux cave depict "people hunting animals, such as bison or wild cats. Other images depict birds and, most noticeably, horses, which appear in more than 300 wall images, by far outnumbering all other animals."

narrate all that you withnessed on your way home after school​

Answers

Answer:

Why would you need to know this? Even if this is part of an assignment, which I highly doubt, we could not answer it, because it is asking for what you pass on the way home.

Where do you put the closing sentence in a paragraph?
A. In the middle of the paragraph
B. At the beginning of the paragraph
C. At the end of the paragraph
D. Wherever it sounds best

Answers

pretty sure C. at the end of a paragraph

The closing sentence in a paragraph must always be put at the end of the paragraph. Thus, the correct option is C.

What is a Paragraph?

A paragraph may be defined as a collection of words that makes complete sense and convey some sort of information on the basis of specific topics.

It may also be characterized as a cluster of sentences that intertwined with each other in order to discuss, debate, or reveal a central idea on a specific matter.

The closing sentence necessarily terminates the group of words and explains a particular paragraph in more precise forms. This sentence overall expresses the sense of understanding or the complete conclusion of the entire paragraph.

Therefore, the closing sentence in a paragraph must always be put at the end of the paragraph. Thus, the correct option is C.

To learn more about Paragraphs, refer to the link:

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what type of Literary Devices is this passage and provide an explanation
" Only the champion daisy trees were serene. After all, they were part of a rainforest already two thousand years old and scheduled for eternity, so they ignored the men and continued to rock the diamondbacks that slept in their arms. It took the river to persuade them that indeed the world was altered."
need this ASAP PLEASE

Answers

Answer: Personification

Explanation:

The type of literary device that is used in this passage is personification. Personification is when an inanimate object is given human qualities.

In this case, the daisy tree ignoring the men and rocking the diamondbacks that slept in their arms is personification since the trees are given the qualities of humans. Also, the persuasion by the rivers is personification since rivers can't speak and convince others.

Is this sentence: "It'll arrive unassembled" correct in grammar? I thought it should be adv instead of adj, I mean the world "unassembled" is an adj in this sentence.
Thanks for helping me.

Answers

Answer:

The sentence looks great with no adjustments

Explanation:

1. Why don't you let me .............that
for you? I am happy to help.
do
to do
did
done

Answers

Answer:

Explanation:

do. You need a present tense ( a simple verb at that)

Did is past

done is also past as in Done meaning completed after it was started a while ago.

to do is an infinitive. You need a simple present tense verb. To go where no man has gone before.

To do what no one has attempted before.

Which sentence contains an infinitive?

Help pls

Answers

It is normal to make mistakes. :)

the code book To improve understanding of the excerpt, which questions are best to ask? Select 5 options.

Answers

The excerpt from 'The Code Book' is:

However, the success of the Information Age depends on the ability to protect information as it flows around the world, and this relies on the power of cryptography. Encryption can be seen as providing the locks and keys of the Information Age. For two thousand years encryption has been of importance only to governments and the military, but today it also has a role to play in facilitating business, and tomorrow ordinary people will rely on cryptography in order to protect their privacy. Fortunately, just as the Information Age is taking off, we have access to extraordinarily strong encryption. The development of public-key cryptography, particularly the RSA cipher, has given today's cryptographers a clear advantage in their continual power struggle against cryptanalysts, and RSA encryption is therefore effectively unbreakable. Most important of all, public-key cryptography is not weakened by any key distribution problems. In short, RSA guarantees almost unbreakable locks for our most precious pieces of information.

Answer:

- What does "encryption" mean?

- What is "public-key cryptography"?

- What kind of encryption was available a long time ago?

- What are "key distribution problems"?

- What are "cryptanalysts"?

Explanation:

'Asking questions' is characterized as one of the effective techniques for better comprehension as it allows the readers to involve themselves completely and think clearly, monitor the key ideas elaborated, the purpose of the text, develop associations between the ideas, predict upcoming events better, and understand it effectively.

In the given excerpt, asking the above questions like 'meaning of encryption,' 'public key cryptography,' 'type of encryption used previously,' etc. would not only assists one in finding out the meaning of the text but also in promoting their thinking, as well as, observing their understanding. This will further allow them understand the author's purpose and relate to it.

State four reasons why incidents of gender based violence in communities continue despite various campaigns to discourage it

Answers

Answer: 1. Men were the first to be able to have jobs and stuff like that and they had more authority and stuff so they have that mind set that they rule women.

17. Which of the following is correct? a. b. He have a lot of money. You has a lot of money. I have a lot of money. all of the above C. d.​

Answers

Answer:

c...........................

c- I have a lot of money

He said to me"don't follow me"( change in indirect speech) ​

Answers

Answer:

He said to me that do not follow me.

Explanation:

PLZ MARK ME BRAINLIEST.

mission of a limited companyformation of unlimited companies ​

Answers

Answer:

hilo edddvffyyioptehrdtudvhihj

3. I am now becoming an elephant, gaining every week pounds by pounds. *
connotative
denotative
1. What is the meaning of connotation? *
Emotional meaning of a word
Official meaning of a word
An emotional outburst
Refers to emotional atmosphere produced by an authors use of language
2. What is the meaning of denotation? *
it represents something else
the art of lasagna making
the emotion of a word
the official meaning of a word
4. Twilight _____ the light from the sky at the end of the day when night is just beginning. *
denotes
connotes
5. The teachers kingdom include thirty-seven smart and intelligent pupils and a conducive classroom. *
denotative
connotative

Answers

Answer:

Ans. 1) Connotation: an idea or feeling which a word invokes for a person in addition to its literal or primary meaning

2) the action of indicating or referring to something by means of a word, symbol, etc.

4) denotes

5) connotative

Which option is the best example of internal rhyme?
A. Becca discovered a moth/ and scared it away with a cloth.
B. Cassandra lives / to care for doves / and gaze at leaves.
C. I am told / that Tia found / a bar of gold / in Puget Sound.
D. He's a wiz in the biz of selling / oil and soil to companies.

Answers

Answer: A is the best example of an internal rhyme.

Explanation: The reason being, is that the end of verse one, the word moth, rhymes with the last verse of line two, cloth. Basically moth and cloth rhyme, making it an internal rhyme.

what is a good way to address with the hiring personality in cover letter

Answers

Answer:

Photos and music

Explanation:

Guitar


Identify the symbolism in the poem. For instance, what do the birds, the singing, and the sky represent? What is the central meaning of the poem?

Answers

Answer:

Caged bird, open sky, free birds

Explanation:

The caged bird depicts the African American who has been bound by society, and the cage symbolizes society. The laterally sky, which is far away from the imprisoned bird, represents freedom, since the free bird “identifies the sky his own.” White Americans might be represented by the free bird. 

Answer:

In the poem, Maya Angelou compares a caged bird to a free bird. The caged bird represents the African American who is restricted by society, and society is represented by the cage. The sky, which is wide-open, yet distant to the caged bird, symbolizes freedom, as the free bird “names the sky his own.” The free bird could represent white Americans. The free bird’s life is carefree and unfettered, and its voice is beautiful and free. The caged bird, on the other hand, is trapped in a cage and “stands on the grave of dreams.” Its voice is fearful and unnatural. The singing of both birds represents self-expression and how discrimination and inequality can hinder and distort the views, ambitions, and expression of those who are persecuted.

Explanation:

Sample answer from Edmentum :)

Although many steps have already been taken, the restructuring is ________ considered to be in its early phases.

Select one:
A. still
B. already
C. yet
D. rarely

Answers

Answer:

still

Explanation:

There are many ways to represent the words and restructuring is considered to be an early part or early phase of still that is in process and is continuous.

The statement will be, although many steps have already been taken, the restructuring is still considered to be in its early phases. Option A is correct.

The sentences have use of words that have been used for making the sentence meaning appropriate, and specific.

Adverbs are the words that are used to specify the situation of the verb. The sentence has the restructuring as the verb. The work has been continuously performed and is in continuous form. The adverb that specifies the continuous work has been still.

Thus the statement will be, although many steps have already been taken, the restructuring is still considered to be in its early phases. Option A is correct.

For more information about adverbs, refer to the link:

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identify the part of speech for the words in brackets. (thought) ​

Answers

part of speech for thought is (thinking).


Which of these words from the paragraph is NOT a transitional word or phrase?
a. Unfortunately
b. Also
d. In addition
C.Most

Answers

Answer:

Most

Explanation:

It doesn’t transition one part of the sentence to another.

which part of speech is lazy.​

Answers

Answer:

The answer is Adjective

Answer:

verb

Explanation:

because it is a action word

What do you think a child most understand to study cultural diversity?

Answers

To respect and love others. It can affect social and emotional development.

Question 3
1 pts
If anyone moves, he will be angry.
Identify the dependent clause. Type it exactly as it appears.
If anyone moves
O he will be angry
Previous
HELP ME PLS

Answers

Answer

Adverbial Clauses

Explanation:

These types of dependent clauses act as adverbs and tell us something about the information that is in the main (independent) clause

20. Which of the following always contains at least two clauses? a. compound sentence complex sentence compound-complex sentence all of the above C. d​

Answers

Answer:

compound complex

Explanation:

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