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

Which of these words has a silent p?
A. Psychiatrist
B. Sample
C. Parachute
D. Peephole

Answers

Answer:

A

Explanation:

A. Psychiatrist

sai
·
kai
·
uh
·
trist

2. Which is a true statement about interrogative adjectives?
They act as the subject of the sentences in which they appear.
O They consist of two or more words.
O They can be found in sentences that act as questions.
They contain the words these and those.

Answers

b) they can be found in sentences that act as questions

anybody free plz. tell. me​

Answers

Answer:

yes I'm free what you are going to tell

Select the correct answer.
Read this sentence:
The outside of the house has deteriorated so much because of the gritty salt air from the ocean... I wish that it could be improved.


Which context clue from the sentence helps clarify the definition and connotation of the word deteriorated?

Answers

“Gritty salt air from the ocean”
“Could be improved”

4. Describe the tales that people tell about the mule after Joe Starks emancipates it. Why do you think the mule captures their imaginations the way it does

Answers

Answer:

Some of these tales that the people were telling about this mule after it was emancipated are how the mule was able to open the kitchen door, how it slept there and also how it caused a fight till they had to make coffee for it. Another tale that was going round was that Mrs. Pearson had mistakenly thought the mule was the Rev that she had to give it food. The people turned these lies about this animal into a trend. Everyone due to what they heard about the mule had to start lying just so they could get involved too with this famous animal. The mule capture their imaginations this way because of what it symbolizes to them. that is setting a tortured soul free.

Some of the tales that people actually tell about the mule after Joe Starks emancipates it are:

How the mule caused a fightHow the mule had the ability to open the kitchen door and even slept in the kitchen.How Mrs. Pearson mistook the mule to be the Rev that she had to give food to it.

The mule actually captures their imagination the way it does because of its symbolism to them that a tortured soul was set free.

About Their Eyes Were Watching God

"Their Eyes Were Watching God" is a story by Zora Neale Hurston. The story talks about the life of Janie Crawford who was in search for true love. The story speaks about the three marriages of Janie and what transpired.

In the story, we read about the mule that Joe Starks buys and emancipates it. Everyone that heard about the mule wanted to associate themselves with it.

Learn more about "Their Eyes Were Watching God" on https://brainly.com/question/25984039

16. How does Judge Waring rule?
17. What falls out of Dr. Clark's suitcase?
18. What kinds of experiments does Dr. Clark perform?
19. How was the movie theater segregated?
20. On the witness stand, what does Superintendent Springer say is the reason for
segregation in Clarendon County?
21. How does the state's lawyer try and discredit Professor Kretch?
22. What does Mr. Tulley (the state's lawyer) say is needed to fix the school's
problems?
23. What happens at Judge Waring's house?
24. What is the decision of the three-judge panel?
25. What does Governor Byrnes say is the plan of the state of South Carolina in
regard to the equalization of schools?
26. What is the reputation of John W. Davis?

Answers

Answer:

What's the story????

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.

.

.

.

.

A "Common Error in Judgment," which focuses on making decisions before gathering all the
necessary information or facts is known as:
A snap judgments.
B all-or-nothing thinking.
C unwarranted assumptions.
D projection.

Answers

Answer: snap judgement

Explanation:

Snap judgement means making a hasty decision before before the necessary evidences are gathered.

All-or-nothing thinking usually involves using "never or ever". It is the inability to see an alternatives or solution to a scenario.

Unwarranted assumptions are the claims that has no supporting evidence.

Projection is the forecast of a future situation which js based on the study of present trends.

Based on the information given above, the answer is snap judgement.

When writing a speech for a Public Speaking course, it is important to:
(AUnderstand the occasion and think about your topic.
B Consider your audience and get them involved.
C Outline your speech, use visuals and prompters, and make sure to practice to stay within the time limit
D-All responses provided.

Answers

Answer:

A is the correct ans in my view

What is the difference between noun clause/ adverb clause/ adjective clause.
It is very confusing can anyone to me.....I am not getting it...please:)

Answers

Cláusula substantiva funciona como um substantivo. Pode atuar como sujeito, objeto e complemento do sujeito. Cláusula adjetiva funciona como um adjetivo e modifica o substantivo.

cláusula advérbio é uma cláusula dependente que funciona como um advérbio dentro de uma frase, indicando tempo, lugar, condição, contraste, concessão, razão, propósito ou resultado. Isso também é conhecido como cláusula adverbial

They... ......the crime during the day. a) performed b) prosecuted c)discharged d) committed​

Answers

Answer:

Committed

Explanation:

Committed is the best word to use because if you put the sentence along with the others, it won't make any sense.

Hope it helps!

Please mark as Brainliest!

On January 16, 1917, in a clear attempt to convince the Mexican government to help Germany in the war, Arthur Zimmermann, the German foreign secretary, sent a telegram to Count von Bernstorff, the German ambassador in Washington. The foreign secretary wanted to be certain that this message reached von Bernstorff, so he made arrangements for it to be carried aboard a U-boat to Sweden and from there to Washington through diplomatic channels. —The Dark Game, Paul Janeczko Which piece of textual evidence best supports the inference that the message Zimmermann sent was very important? Check all that apply. “On January 16, 1917” “a clear attempt to convince the Mexican government to help Germany in the war” “Arthur Zimmermann . . . sent a telegram to Count von Bernstorff” “The foreign secretary wanted to be certain that this message reached von Bernstorff” “he made arrangements for it to be carried aboard a U-boat”

Answers

Answer:"The foreign secretary wanted to be certain that this message reached von Bernstorff" definitely implies a sense of urgency. "He made arrangements for it to be carried aboard a U-boat" does too—I'd say something's important if it requires its own boat.

Explanation:

The piece of textual evidence which best supports the inference that the message Zimmermann sent was very important is "The foreign secretary wanted to be certain that this message reached von Bernstorff" definitely implies a sense of urgency. "He made arrangements for it to be carried aboard a U-boat" does too—I'd say something's important if it requires its own boat.

What is Inference?

This refers to the use of deductions to come to a conclusion about a thing based on the available evidence.

With this in mind and from the given narration, there is the use of inference to show that the message Zimmermann sent was very important and this was showed in the fact there was a sense of emergency.

Read more about inference here:

https://brainly.com/question/1081576

pls can i know the answers to these homophones questions
come and look widely
a mistake and chicken​

Answers

Answer:

a chicken

Explanation:

chicken

Which sentence uses engaging details to tell a story?
I felt so embarrassed when the teacher called on me in front of the whole class, and i did not know the answer.
Because i did not know the answer, i felt so embarrassed in class when the teacher called on me.
My face turned bright red and my eyes swelled with tears when the teacher called on me and i didn’t know the answer.
When the teacher asked me a question in front of the class, i didn’t know the answer, and j felt so embarrassed

Answers

Answer:

My face turned bright red and my eyes swelled with tears when the teacher called on me and I didn’t know the answer.

Explanation:

This one uses details like "my face turned bright red" and "my eyes swelled with tears" instead of just stating "I was embarrassed. "

Which excerpts from "Household Robots Are Here, but Where Are They Going?" best cite textual evidence to support
the central idea that robots will use machine learning to enable them to have meaningful contact with humans?
Select all that apply.
Household Robots Are Here, but Where Are They Going?
Matuszek says there is a lot of value in thinking of robots as companions, mainly for specialized
purposes such as caring for elderly or isolated people or autistic kids.
During an interview.Jibo's product manager, Matt Revis, refers to jibo as he" throughout. When
you're talking to him" Revis says you feel like you're interacting with someone."
You dont need your robot to be humanoid to tell it to turn off the downstairs light (which Echo
will soon be able to do) or order more detergent (which Amazon will gladly sell you)
if teaching kids how to play the piano is the goal, maybe the humanoid approach is best. But if
you just want a hub for your smart home, Echo's approach is better.
Got

Answers

Answer: Matuszek says there is "a lot of value" in thinking of robots as companions, mainly for specialized purposes such as caring for elderly or isolated people, or autistic kids.

During an interview, Jibo's product manager, Matt Revis, refers to Jibo as "he" throughout. "When you're talking to him," Revis says, "you feel like you're interacting with someone."

Explanation:

The best cite textual evidence to support the central idea that robots will use machine learning to enable them to have meaningful contact with humans include:

• Matuszek says there is "a lot of value" in thinking of robots as companions, mainly for specialized purposes such as caring for elderly or isolated people, or autistic kids.

• During an interview, Jibo's product manager, Matt Revis, refers to Jibo as "he" throughout. "When you're talking to him," Revis says, "you feel like you're interacting with someone."

A vehicle starts to move foom rest and maintains an acceleration of 0.8 m/s2 in 10 second Calculate the final velocity and distance covert by the vehicle with in that time.

Answers

initial velocity, u = 0m/s (starts from rest)

final velocity, v = ?

time, t = 10 seconds

acceleration, a = 0.8m/s²

v - u = at

v - 0 = 0.8(10)

v - 0 = 8

v = 8m/s

speed = distance / time

distance = speed x time

distance = 8 x 10

distance = 80m

Describe how first Aid will be given a lictim under the following accidents at work Shop.

Chemical barns
Electric shock
Fire burns

Answers

Answer:

b

Explanation:

Based on the passage, what is the effect of these word choices on the tone of
the play?

Answers

Answer:

What happened to this exercise?

Answer: The answer is

B. It shows that supernatural forces are at work

Explanation: the poem says,"[Witches]. Fair is foul, and foul is fair; Hover through the fog and filthy air" which means that the there describing the witches flying through the air which would mean that the answer would be

Pls help ASAP I’m really dum I don’t get sh

Answers

Answer:

The statement is a fact because it contains an expression that can be proven true.

Explanation:

A fact is an opinion that can be proven true whereas a reasoned judgment is an opinion supported by evidence. The statement that the brain activates a greater part of the brain is verifiable from previously conducted studies that were not cited by the speaker. However, his expression was based on that fact. A reasoned judgment would have expressed the opinion and immediately used facts and statistics to support it.

Therefore, the statement is a fact.

Which would be the best concluding sentence for this paragraph?

Answers

Answer:

C. These similarities and differences make the presence of life on Mars a possibility.

Explanation:

this sentence^ is the best conclusion for the paragraph. the other ones do not make as much sense.

early in the paragraph, we can read the sentence: There is, therefore, a likelihood that life may exist there in the future.

it states the same idea as answer c.

i hope this helped you

Which sentence contains the best example of paradox?

Answers

Its gonna be D fs !!!!!!!!!!

Answer: The answer is A

Explanation: B

ecause it contradicts the original statement.

10. What are some differences between Poe's literary impact and his cultural impact??

Answers

Edgar Allan Poe influenced Literature in many ways. He has influenced comic books, novels, series, and short stories. He influenced science fiction and also detective fiction. ... This character and Poe laid the 'groundwork' for the Sherlock Holmes books.

dialogue between two friends about holiday....​

Answers

Answer:

me :hi

friend:hello

me: what's up

friend: I'm good and what about you

me: I'm also good

friend: what is your plan for holiday

me: I'll be in mamaghar and you

friend: I have plan to visit godawari

me :ohh

Friend: okay we will be on touch

me: ok bye

friend:bye

Explanation:

you can add another name if you like

make me brainlist

The brave soldier was rewarded ...... a medal. (by/with/in/from)​

Answers

Answer:

The brave soldier was rewarded .WITH. a medal

Answer:

the brave soldier was rewarded by a medal

In the story American born Chinese the Chinese herbalist tells Jin wang, “it’s easy to become anything you wish… so long as you’re willing to forfeit your soul” This is an example of

Answers

Answer:

D) foreshadowing, to create suspense by providing hints about the future.

Explanation:

The statement, “it’s easy to become anything you wish… so long as you’re willing to forfeit your soul” gives an hint of what is at stake in other to attain a future endeavor. It gives an indication of what the future holds given, an individual's sacrifice. This concept of given an hint or indication of the future could be described as a literary device called foreshadowing. The Chinese herbalist is using the statement to hint Jin Wang of what could possibly happen in the future.

Answer:

Foreshadowing

Explanation:

Jin Wang would do anything to fit into American culture.

your class went on an excursion to a place of interest.write a report on trip to your headmaster

Answers

Answer:

You treat her like other and you welcome him as you friend

Explanation:

That my example

HELP PLEASE I WILL GIVE BRAINLIEST FOR THE RIGHT ANSWERS

Answers

Answer:

C=correct, I=incorrect

Explanation:

C I

C C

C I

I I

Someone can you forward your email address to someone else without you knowing it true or false?

Answers

Answer: True

Explanation: Because someone who knows you can send your personal email to someone else without your consent. It happens many times.

Use the following presentational verbs in sentences.
apologize to, adapt to, devote to, refer to
, replay to,admire for, apply for, pray for,
scold for, vote for, aim at, arrive at, glance at​

Answers

Answer:

I apologized to Alex

He was adapted to john's father

I would refer to have some ice cream

She admired him for his bravery

His mother always prays for him

He was being scold for his bad behavior

I vote for Bidon to be the next president.

He aimed at him perfectly

John glanced at Ali happily

Why do we dream?????? ​

Answers

Answer:

rapid eye movement REM causes the dream

'' diagrams are inseparable ''

true

or

fake

Answers

Answer:

FAKE

Explanation:

ITS FAKE

DIAGRAMS CAN BE SEPRATED IN ANY TYPE!

PLZ MARK ME BRAINLIEST....!!!

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Which definition correctly describes a political party?A political party is a group that makes laws in government.A political party is a local group of citizens who try to change a law.A political party is a group that supports candidates in elections to get them into public office.A national group that tries to ratify new constitutional amendments. What was different about the movementGandhi created? Scott invested a total of $5400 at two separate banks. One bank pays simple interest of 12% per year while the other pays simple interest at a rate of 8% per year. If Scott earned $552.00 in interest during a single year, how much did he have on deposit in each bank? Is it possible to get a body accelerated even if it is moving with uniform speed? justify. someone help me please with this algebra problem How much will it cost to fill up an empty 12-gallon take if gasoline costs $1.1599 per gallon Which table of values corresponds to the graph below? What is a precipitate?1) A solid product of a chemical reaction that is in aqueous form.2) A solid product of a chemical reaction that is not in aqueous form. Select the correct answer.What factors contributed to the United States becoming a world leader?O A. the United States winning the war and having a strong economyO B. the Allies winning the war and US having a skilled labor forceOc. the United States winning the war and German scientists sharing their knowledgeD. the United States suffering no war damage except for Pearl Harbor and having a strong economyResetNext 3. Una forma de dividir facilmente entre 4 es dividiendo dos veces entre 2.Observa el ejemplo y aplica el procedimiento utilizadoEjemplo: 5684=(5682)2 = 284 2 = 142a) 9364= c)2 8124=b) 2 0844= d)3 7204= Find a number such that if 16 is added to it, the ratio of the result to the original number is 4:3 Given ACM, angle C=90. AP=9, PM=12. Find AC, CM, AM. ___you____(read)"Harry potter" when you were on holiday? 30. Which of the following explains why a speech should be precise and conciseEnsure statements are humorous and believable.Ensures statements are clever and repetitive.Ensures statements are accurate and to-the-point.Ensures statements are supportive and strategic Which of these is more likely to be true? A. An adaptor is likely to consider radical innovations B. An innovator is likely to consider incremental innovations C. Large companies often find it easier to adopt radical innovations. D. Innovators will often push for radical innovations. 6. The thin delicate membrane just attached to the cytoplasm is: [MOE 2061] (a) Ectoplasm (b) Endoplasm (c) Tonoplast (d) Protoplasm Summarize the five levels in Maslow's hierarchy of needs. simplify (-9)56(-3) In what country of United states of heightlandia, the height measurements of ten year old children are approximately normally distributed with a mean of 53.2 inches and standard deviation of 6.7 inches? Find the value of x,rounded to the nearest tenth