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

Why ......you always.....over spilt? I am tired of what you say A are_ crying. B.do_drink

Answers

Answer:

Can't answer need more text.

Explanation:

I'd love to help you give me more context in the comments and I will answer this for you.

write an Essay "Innovative Ideas for Zero Plastic waste in School Events" within 500 to 800 words.​

Answers

Answer:

1) Make reusable water bottles​ part of school culture

2) Find refill points​

3) Cut out single-use straws and dessert pots

4) Switch to metal cutlery​

5) Switch to reusable sandwich wraps (not just tin foil)

6) use a reusable drinking bottle

7)Create a reusable “party kit” for school events

Explanation:

However, not everyone is convinced that genetically modified foods are beneficial. Opponents say that too little research has been done on the effects of GMOs on humans and on the environment. They argue that GMOs could be creating new poisons. They are also concerned about what might happen if genetically modified plants breed with wild plants. Some farmers are concerned about the possibility of inadvertently crossbreeding GMO plants with non-GMO plants. For example, if the pollen from a GMO plant blows into their organic field, now that organic crop could become a GMO crop. The possibility also exists that all this interbreeding could lead to new strains of herbicide-resistant super-weeds.

What is the topic sentence of this paragraph?

Answers

The topic sentence of the paragraph is; Opponents say that too little research has been done on the effects of GMOs on humans and on the environment.

What is the topic sentence of this paragraph?

A topic sentence as the name implies is one which summarizes the main idea of a paragraph. It is the first sentence in a paragraph in most cases. Otherwise known as the main idea as it the writer’s position on that topic, it encapsulates or organizes an entire paragraph.

However, in this case, it is the second sentence.

Read more on topic sentence;

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explain this statement "I can set limits and still be a loving person"​

Answers

Answer:

This means you can restrict yourself of certain actions and still have a loving heart aside it.

People can't take advantage of you but still be nice person

1: I hope the ............can repair our car quickly.
A. mechanic B. reporter C. surgeon D. engineer
2.He got drunk after drinking …………….
A. a school of wine B. a sip of wine C. a flock of wine D. a band of wine

Answers

#1 mechanic
#2 i believe, a band of wine

write a letter to your friend describing how you were helped by a stranger when you were in need​

Answers

Answer:

Dear, Lizzy (using a random name lol) Today something strange happened to me. i was going to The store to buy some food supplies for my kids as i walk towards the store I was in a rush and wasnt thinking straight the time passed and i finally got my stuff as i was about to check out i noticed An old lady struggling to get something. I didnt really think and i happidly helped her. she thanked me after which i felt  slight relieved after sometime it was finally my time to check out then i suddently noticed i left my wallet it was very frustarating and i tried explaining the cashier about my situation.. when suddenly the old woman i helped earlier said "I will pay". That made me so shocked. the woman had Paid for my supplies.. it was so Confsuing and rare and i thanked her so much she finally said "You did me a favor and im returning it". All i could do was smile and since then I Feel grateful about this and i think that if it happens again i wont hesitate on helping. Becuase next time i could be in bad luck but there might be a miracle to help me. And You should do the same lizzy!

Sincerly, Your friend (randome name) Jessica

Explanation:

After my laborious conquest, I’ve distanced myself a little from the situation but you mustn’t think my love has cooled. Peter’s a sweetheart, but I’ve slammed the door to my inner self

Answers

Answer:

cool, very epic, much awesome!!!

There is no difference between a drama and a novel, each of tell a story

Truth
False

Answers

I think that's truth hope this will be correct answer

what is a accounting?​

Answers

Answer:

Accounting is the process of recording financial transactions pertaining to a business. ... The financial statements used in accounting are a concise summary of financial transactions over an accounting period, summarizing a company's operations, financial position and cash flows

First Conditional : "I will go if they go."

Second conditional : He said he _____ if they ______ ​

Answers

Answer:He said he would go if they went.

Explanation:

Mark me as brainlies t

The answer is:

He said he “would go” if they “went”

Would you like to live in your hometown or somewhere else?

Answers

That depends. If you get homesick easily, I would suggest to live in your hometown. If you don't, and like to travel then I would say, "Go for it" for living in another place. I personally would like to live in another country.

Answer:

hometown

Explanation:

because I have learned many things from my hometown such as respect senior love junior,to be self discipline, helping others at needs etc.

some one my stole my pen

Answers

Answer:

Someone has stolen my pen

Explanation:

English is very dynamic to an extend that we all make mistakes. Buh b4 you speak you have to think twice.

Question 2 of 10
While writing a persuasive piece, which appeal should you use to get your
audience to believe and trust you?
A. Pathos
B. Tone
C. Ethos
D. Simile
SUBMIT

Answers

I think the choose (C) Ethos

I hope I helped you ^_^

SPEAKING
What happen if there is no technology one day?
How technologies support old generation?
Predict how people use technologies in the future.

Answers

Answer:

A world without technology would be very stressful, and without the technology that exists, we would have many problems that we don’t have today. There would be no social media, no devices, and many other things that could change the way we live, but some of those changes could be beneficial to our lives.

All of the technology we've mentioned can help older people to improve their physical and mental well-being, as well as their social lives. ... Apps and social media can help to prevent loneliness, whilst the internet can help make it easier to shop and to manage your bills.

Which of the following sentences shows an adverb modifying a verb?
A. The extremely fast criminal escaped the police.
B. The daily newspaper arrived.
C. The movie was interesting
D. Bobby should be arriving soon.

Answers

Answer:

I think number D.

is the write answer

Explanation:

and thanks for asking question

The sentence that shows an adverb that modifying a verb is that the Bobby should be arriving soon. Option D is correct.

What is adverb?

An adverb is defined as a word that changes or describes some other word, such as a procedural, a verb, or even a whole sentence. Example, I had brought a pen.

Some examples are:

   He makes well.    He eats very fast    Rama plays harmonium    He ran slowly.    Sunita spoke softly.    James coughed slowly to not attract her attention.    He plays the guitar attractively.

Noun the words “early,” “slowly,” “home,” and “hard” are all adverbs in the phrases “runs slowly,” “arrived early,” “stayed home,” and “works hard.” The sentence that “Bobby should be arriving soon” is also fall under this category, and this sentence fulfills the rules of the adverb.

Therefore, option D is correct that the Bobby should be arriving soon.

Learn more about the adverb, refer to:

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many student in rural area do not get access to quality education – they struggle to find well paid job after graduating from University ​

Answers

Answer:

Explanation:

many-student-in-rural-area

Aug 12, 2021 · Many student in rural area do not get access to quality education – they struggle to find well paid job. many student in rural area do not get access to quality education – they struggle to find well paid job after graduating from University .

Read the following excerpt from a biography on Mark Twain and answer the question.

Samuel Langhorn Clemens, Mark Twain, was born in Florida, Missouri on November 30,1835. The experience of his life prepared him as a writer, an American writer. He worked as a printer, then apprenticed himself as a river pilot on the Mississippi, and eventually became one of the best. He worked at mining activities in Nevada. In 1862, he took a position on the Virginia City Enterprise where he first used the name Mark Twain, which was a riverboat pilot expression.

He went to the West Coast and worked for a while on the San Francisco newspaper, Morning Call. After leaving there, he went to Calaveras County to try his hand at mining. In 1865, he was asked by Artemus Ward to write a humorous sketch. He signed it "Mark Twain," and his reputation began on the eastern seaboard. In 1866, he was sent by the Sacramento Union to Hawaii. Unexpectedly, in 1867, he sailed abroad and wrote letters that were to become the book, The Innocents Abroad. With that book he became the most famous humorist of his time. In July, 1869, The Innocents Abroad was published. On February 2,1870, he married Olivia Langdon.

What is the best way to describe the language used in this excerpt?

informal language
formal language
critical language
objective language

Answers

Answer:

the answer is "informal language"

classroom layout

1.What other additional classroom furniture such as filling cabinets, bookshelves, working tables will there be?
2.Do you have other specific needs that is important for your specific subject?
3.How many classroom bulletin boards will you have?
4.What other classroom display ideas as swimming pool around in your head?​

Answers

Answer:

1. I'm looking for a Multi-Use Storage Center with Drawers. This addition will facilitate the organizing of supplies and educational activities and crafts for children. This will be situated on a red carpet to avoid distracting youngsters while the more focused topic is being taught.

2. My goal is to learn about different people's needs so that I can adjust to them. The word "attention to diversity" refers to a wide variety of themes, including educational system activities, school operations, and even the most precise interventions of teachers in their classes. As a result, it's critical to cater to each individual's needs, which can be a tough and time-consuming task when teaching a large group.

3. I intend to have six bulletin boards, allowing for two per wall.

4.To keep youngsters interested, I'll be updating the bulletin boards with contemporary graphics of color and attention, which means I won't be performing a significant redesign. I can leave the majority of the board alone and only update a tiny portion of it on a regular basis. Two half-bulletin, half-white-erase combo boards per wall, featuring current homework assignments, inspiring quotes, facts, and other information.

Alexander is entering an essay competition for the topic "Does voting matter?" He decides to use the classical argument model for his essay. At the end of his introduction, he writes a thesis statement in which he argues that people should vote because recent elections have been decided by very small margins. His body paragraphs discuss counterarguments to his viewpoint that voting does, in fact, matter. Finally, he concludes by urging his readers to vote in their next election. Which component of the classical argument model has Alexander forgotten? a.) Providing an evidence-based discussion of his claim b.) Considering alternative viewpoints and how they interact with his own c.) Concluding with a call to action d.) Introducing the topic of his essay

Answers

Answer:

a

Explanation:

The correct response is - To provide an evidence-based discussion of his claim. Therefore option a is the correct response.

What is the competition?

In economics, competition is a situation in which one company tries to be more successful than another. One business may be trying to sell more than a rival. It may also be striving to gain greater market share. Often, several companies are competing. The word refers to a race, in which the suppliers of goods or services try to beat their rivals.

In a non-business context, the word refers to a contest or rivalry involving at least two competitors. We use the term in sports, nature, science, social groups, etc. In fact, we use it in any situation in which one entity is trying to beat at least one other entity.

To read more about competition, refer to - https://brainly.com/question/29015369

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rewrite the sentences using the given word
1 ; Yesterday / I / see / Jaden / on / way /come / home .
2 ; what / you / do / last Monday / You / look / tired / when / come / our house .
You can add prepositions , tobe ... and then arrange them into meaningful sentences, change them all to the past.

Answers

Answer:

1. Yesterday,I saw Jaden on my way coming home.

2. What did you do last Monday, because you looked tired when coming to our house.

Bill's mother is ill. He has to do all of the cooking and cleaning. (because of)

Answers

Answer:

because if his mother illness..

Explanation:

hope this will help you

me ayudan porfavor:3​

Answers

Answer:

1. cooked - to cook something - past tense

2. wrote - using a pencil or pen to mark down letters or words onto a piece of paper - past tense

2. apologize - to say sorry - future tense

3. brought - take something to a place - past tense

4. told - to tell someone about something - past tense

4. visit - go to see something or spend time with people - future tense

5. left - to leave behind - past tense

6. called - to yell to someone, say their name, or ring them on the phone - past tense

Explanation:

Answer:

I wrote down what I think are the answers

Explanation:

I hope I helped

. All researchers must---------- this week’s session on laboratory policies.
(A) attend (B) comply (C) inspect (D) apply

Answers

Answer:

(A) attend

Explanation:

hpe it helps.....

Which statement best describes the historical significance of the Declaration of Independence?

Answers

Answer: It describes why the colonists wanted to be free from Britain and what led to their decision to fight against British rule.

Explanation:

The Declaration of Independence refers to the pronouncement that was adopted by the Second Continental Congress in 1776 during their meeting in Pennsylvania.

The document stated that the thirteen colonies were now sovereign and has become independent states and therefore the British rule isn't recognized anymore and now referred to as the United States.

The main ideas of the Declaration of Independence include the fact that all men are equal by God and that everyone has some rights which the government should protect and if any government wants to withhold such rights, the people can then revolt.

The historical significance of the Declaration of Independence was that it describes why the colonists wanted to be free from Britain and what led to their decision to fight against British rule.

Answer:

B

Explanation:

what do all organism meed? selecet three options
nerves system
a place to live
blood
water
food

Answers

Answer:

all organism need water, food, a place to live

Some of my friends are quite helpful into negative

Answers

sad boys hours .............

What is the verbs and adverbs in this passage please help

Answers

Answer:

the adverbs are he,I,

Explanation:

adverbs are used in place of nouns

kindly correct me if I am wrong

Do they help anybody? Into affirmative

Answers

Answer:

They would help anybody.

(4x-3y).(x-1/2y) help meeeeeeee

Answers

Explanation:

(4x-3y) ((x-1)/2y)

multiply (4x-3y) with (x-1)

you will get

4x^2-4x-3xy+3y

now dividing the whole term by 2y as at first (x-1) is divided by 2y

you get

(4x^2-4x-3xy+3y)/2y

taking common

(4x(x-1)-3y(x-1))/2y

((x-1)(4x-3y))/2y

it is your answer if you question is wrong cause you wrote x-1/2y and I did it ((x-1)/2y) so have a check if the question you wrote is wrong!

He plays the trumpet.
Change into Negative form​

Answers

Answer:

He doesn't play the trumpet

Explanation:

Done

Negation of "He plays the trumpet." is "He doesn't play the trumpet."

Hope this helps :)

Other Questions
II. Choose the word whose stressed pattern is pronounced differently from the others.1. A. improve B. support C. educate D. invent2. A. patient B. become C. quality D. science3. A. unable B. impolite C. unhealthy D. imbalance4. A. enormous B. discover C. benefit D. inventor make a list of principle of lever. During the data transmission there are chances that the data bits in the frame might get corrupted. This will require the sender to re-transmit the frame and hence it will increase the re-transmission overhead. By considering the scenarios given below, you have to choose whether the packets should be encapsulated in a single frame or multiple frames in order to minimize the re-transmission overhead.Justify your answer with one valid reason for both the scenarios given below.Scenario A: Suppose you are using a network which is very prone to errors.Scenario B: Suppose you are using a network with high reliability and accuracy. 13. Is the word LAWYER in the following sentence a predicate nominative or apredicate adjective?My sister became a lawyer after years of study. Please help A. SASB. AASC. HAD. LLE. ASAF. HL hi! would it be correct if i said"the components of our solar system consists of our star, the Sun, and everything bound to it by gravity" I'm not looking for punctuation corrections but just if it sounds right or something like that :> A rectangle has a length of 8ft and a width of 9ft. What is the area of the rectangle, in ft^2? What features are typically associated with postmodern fiction? a colleague needs to move a 500 pound object that's on a lever. the fulcrum is 6 inches from the object. If your colleague weighs 180 pounds how far will your colleague need to be from the fulcrum to move the object? Use the formula B = (P x A) W, and round your answer to two decimal places. If two angles are complementary, find the measure of each of angle. Greg has a list of payments for goods brought every month for the years 2009,2010,2011, and 2012. He needs information from only the last three years. He can filter this by clicking on find a number which is when added to it's square the sum will be 72. If sam runs 63,756 feet in 70 min what's his miles per hour demonstrated the knowledge of control ventilation 100 points for you if you help me What district is union city nj in What answer best describes the U.S.'s response to the destruction in Europe after WWII? While in a department store, a man picked up a sweater and slipped it under his shirt. The man then started for the door. A woman, who also was shopping in the store, saw the man take the sweater. The woman grabbed a baseball bat from the sporting goods aisle and chased the man into the parking lot. The woman began swinging the bat at the man's head, hoping to knock him out and thus prevent the theft. The man pulled a knife from his pocket and stabbed the woman, killing her. The man was arrested and charged with murder. At trial, will the man most likely be found guilty 1)An average American human lives about 78.74 years. A survey gave an average time spent going to the bathroom to be 102 minutes per week. If there are 52 weeks in a year, 7 days in a week and 1 day is 24 hours, then how many minutes do Americans spend on the toilet in their life time? 2)How many minutes have you spent on going to the bathroom if you are at the age of 16? What's a third reaction? (Chemistry)