Construct a 99% confidence interval for the population mean, µ. Assume the population has a normal distribution. A group of 19 randomly selected students has a mean age of 22.4 years with a standard deviation of 3.8 years.A.(19.9, 24.9)B.(18.7, 24.1)C.(16.3, 26.9)D.(17.2, 23.6)

Answers

Answer 1

To construct a 99% confidence interval for the population mean (µ), we will use the sample mean, standard deviation, and the sample size provided.

In this case, we have a sample of 19 students with a mean age of 22.4 years and a standard deviation of 3.8 years.

To calculate the confidence interval, we will first find the margin of error. To do this, we use the formula: Margin of Error = Critical Value * (Standard Deviation / √Sample Size).

Since we need a 99% confidence interval, we will use a critical value from the standard normal distribution, which is 2.576 for a 99% confidence level. Now, we can calculate the margin of error:

Margin of Error = 2.576 * (3.8 / √19) ≈ 2.24

Next, we will add and subtract the margin of error from the sample mean to find the lower and upper bounds of the confidence interval:

Lower Bound = 22.4 - 2.24 ≈ 20.16
Upper Bound = 22.4 + 2.24 ≈ 24.64

Therefore, the 99% confidence interval for the population mean (µ) is approximately (20.16, 24.64), which is not among the provided options (A, B, C, or D). It is essential to ensure the accuracy of calculations and the use of the correct critical value for the desired confidence level when constructing confidence intervals.

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Related Questions

How do I find the cash flow coverage ratio?

Answers

Explanation:

There are a few different ways to calculate the cash flow coverage ratio formula, depending on which cash flow amounts are to be included. A general measure of the company’s ability to pay its debts uses operating cash flows and can be calculated as follows:

Cash flow coverage ratio = $80,000,000 / $38,000,000 = 2.105Cash flow coverage ratio = ($64,000,000 + $4,000,000 + $8,000,000) / $38,000,000 = 2

a car travelling at 36km / h accelerates uniformly acceleration final 2m / s ^2 find its velocity in 5 second ​

Answers

Answer:

v = 20 m/s

Explanation:

Given that,

Initial speed of the car, u = 36 km/h = 10 m/s

Acceleration of the car, a = 2 m/s²

We need to find the final speed of the car in 5 seconds. Let the final speed is v. So,

v = u +at

Substitute all the values,

v = 10+2(5)

= 10+10

= 20 m/s

So, the final speed of the car is 20 m/s.

Four people are applying for a job. This chart shows the company’s favorite characteristic of each of these job applicants:

Answers

There is no chart present.

Which of these is NOT a concern for consumers in times of inflation?
a.They cannot anticipate the cost of goods and services.
b.They lose money on their investments and savings.
c.They are at a disadvantage when paying back borrowed money.
d.They struggle when they are on a fixed income.

Answers

Answer: D

Explanation:

Janice, a nurse at a hospital, is preparing a presentation for trainee nurses about guidelines for patient care. What is the purpose of her
presentation?


A. to persuade

B. to instruct

C. to entertain

D. to debate

Answers

Answer:

B

Explanation:

To teach and acknowledge the guidelines for trainee nurses to help patients in an effective way

Martin is a credit counselor working with a client, Kim, who is in serious financial trouble. Kim is hesitant because she has a long way to go and a lot of work to do before she can be financially healthy again. What is the best way for Martin to explain the next steps to her?

A.) Martin should present the information in small manageable steps rather than give her a lengthy to-do list.

B.) Martin should make a list of tasks that must be completed and do them for her, since he is an experienced professional.

C.) Martin should compile a list of all the tasks that Kim must complete and suggest that she report back to him after she is finished.

D.) Martin should not encourage her to do anything she is reluctant to do, even if it means salvaging her financial life in the long term​

Answers

Answer:

C

Explanation:

C la respuesta es la C ya que

who wants to make a call??

Answers

Answer:

Zoom you mean?

Explanation:

Answer:

I want to call my mom,lol

What are three elements of negligence?
Actual Harm
Breach of duty
State of mind
Duty of care
Proximate cause
Motive

Answers

Answer:

actual harm

breach of duty

duty to act

Gianna put $1,000 in a savings account for 18 months. The interest on the account is 3.5%.

How much will Gianna earn in interest? What amount will she have at the end of the time period?

Answers

Answer:

You will earn $52.96 in interest

You have $1,052.96 in total.

Which of these is NOTa concern for consumers in times of inflation? a.They cannot anticipate the cost of goods and services. b.They lose money on their investments and savings. c.They are at a disadvantage when paying back borrowed money. d.They struggle when they are on a fixed income.

Answers

Answer:

c.They are at a disadvantage when paying back borrowed money.

Explanation:

In any economics of a country, inflation may be defined as the fall of the value of the money or currency of a country over a period of time. In inflation, the general price level increase and the value of money decreases.

Due to inflation, with each currency unit, less of goods or services can be bought. In inflation, the consumers are not concern about the disadvantage when they pay back the money that they borrowed because the value of the money decreases. Money decreases its value but the demand of goods and services increases in the economy.

By law, an accountant must hold a CPA designation in order to
?

Answers

Answer:

The CPA designation isn't required to work in corporate accounting or for private companies. However, public accountants⁠—which are individuals working for a firm, such as Deloitte or Ernst & Young, that provides accounting and tax-related services to businesses—must hold a CPA designation.

Explanation:

Answer:

Prepare audited or reviewed financial statements.

Hope this helps :)

Drag the tiles to the correct boxes to complete the pairs.
Match the cost or benefit with the appropriate spending decision.

Answers

Answer:

can result in crushing interest expenses, obtaining a loan for a major purchase

can help in any emergency using your savings account money

does not require planning, making impulse purchases

establish good credit using credit card

Answer:

tile:  Making impulse purchases = pairs: does not require planning

tile:   Using credit cards = pairs: can result in crushing interest expenses

tile:  Obtaining a loan for a major purchase = pairs: establishes good credit (if the payments are made on time every month until paid off)

tile:  Using your savings account money = pairs: can help in an emergency

Explanation:

1st tile: by definition an impulse purchase is made quickly, without any planning.

2nd tile:  if credit cards are used without paying off balances every month can lead someone to accruing large amounts of interest charges and can lead to financial ruin.

3rd tile: Typically when making large ticket purchases like homes or cars can build a great credit history because it gives you credit history and payment timeliness history.

4th tile: Typically when emergencies happen, there is no time for payments or financial planning. Savings funds can help during unplanned or emergency financial situations such as unplanned car repairs or car accidents.

HELP FOR CROWN!!!
what is one thing a bank will require you to have when you ask for an auto loan?
A. keys to the car
B. proof of auto insurance
C. driver's license
D. letter of recommendation

Answers

Answer:

It is either C or D

Explanation:

Answer:

Driver's License


Benjamin wants to become a biotechnologist and eventually run his own
laboratory. In order to reach his goal, what education should Benjamin plan
to get?
A) internship
B) apprenticeship
C) associate degree
D) master's degree

Answers

Answer:

what education should Benjamin plan

to get?

D) master's degree.

In VAT (Value added tax) is it profitable to buy in large or small quantities?​

Answers

It’s more profitable to buy in large quantities.

Shareholders had a good year, earning a 29% annual rate of return. The PE ratio today is 10.0 and the company just announced earnings per share of $2.50. The company has a 90% payout ratio. How much did the stock price change over the past year?

Answers

Answer:

$3.68

Explanation:

Rate of return =29%

PE ratio = 10.0

Earning per share = $2.50

P1 = PE ratio * EPS

P1= 10*2.50

P1 = $25

Payout ratio = 90%

Dividend = 2.50*90%

Dividend = $2.25

Rate of return = (P1+D1-P0)/P0

0.29= (25 + 2.25 - P0)/P0

0.29 P0 = 27.50 - P0

1.29P0 = 27.50

P0 = 27.50/1.29

P0 = $21.32

Change in stock price = $25 - $21.32

Change in stock price = $3.68

1. ¿que tiene que ver el gobierno populista con el universal basic income? 2. ¿es el UBI bueno para la economía?

Answers

Answer:

Un ingreso básico es un ingreso garantizado que todo ciudadano recibe del gobierno, independientemente de los ingresos que genere a través de su trabajo. Los defensores de esta medida sostienen que la renta básica universal aumenta las posibilidades de continuidad del desarrollo, que pueden posibilitar un ingreso básico, como estudios, inversiones, opciones de uso del tiempo y otras posibilidades de autorrealización.

Ahora bien, los defensores institucionales de esta medida suelen ser los gobiernos de tinte populista, que buscan a través de estas medidas benefactoras captar votos, otorgando beneficios económicos a cambio del apoyo político de los ciudadanos.

En cuanto a la economía, el UBI podrá ser beneficioso si fomenta el consumo y la producción de bienes, pero debe contemplarse que no puede, de ninguna manera, llegar a reemplazar los ingresos generados por el trabajo.


The human resource manager is undecided about whether to use internal or external
recruitment for filling the supervisor vacancy. Which method would you recommend? Justify
your answer, with advantages and disadvantages.

Answers

Advantages would be used I think

Do you think a client’s wishes should trump ethics in the mind of an advertising professional? Why or why not?

Answers

Answer: They should not.

Explanation:

When it comes to the advertising industry, the wishes of the client are not of the highest priority, they are of the second highest priority.

The highest priority is to the industry and its integrity. If advertisers acted in an unethical manner, they would risk destroying the reputation of the advertising industry which would lead to a massive loss of trust in it that could severely impact it.

Regardless of how important a client might be therefore, their wishes should never trump the ethics required in the industry because these ethics maintain the integrity of the advertising profession.

equity shareholders are called what ​

Answers

Answer:

owners

Explanation:

Shareholders' equity represents the amount invested by the owners of a company in the business by either retaining earnings over time or by investing money in it. The shareholders' equity is a form of a company's net assets. Equity shareholders are also known as Equity Stockholders.

The equity shareholders of a company are called its owners.

Suppose the GDP of the entire European Union is 350,000 euros and the exchange rate between euros and USD is 0.66 EURO=$1. What is the GDP of the European Union when measured in USD? Round your answer to the nearest hundredth.

Answers

Answer:

the GDP of the  European Union is $530,303.030

Explanation:

The computation of the GDP of the  European Union is shown below:

= Entire european union × euro ÷ exchange rate

= 350,000 euros × $1 ÷ 0.66

= $530,303.030

Hence, the GDP of the  European Union is $530,303.030

We simply applied the above formula

Question 6 of 10
The practice of fractional reserve banking means that:
O A. banks are required by law to operate as nonprofit organizations.
O B. banks are not allowed to use deposited funds to make loans.
O C. banks can change the interest rates on loans at any time.
O D. banks only keep a portion of their deposits as cash reserves.

Answers

Answer:

D. banks only keep a portion of their deposits as cash reserves.

Explanation:

A fractional reserve system needs a commercial bank to maintains the customer deposit percentage at the time of custody. This means that at any time the deposit fraction should have the cash backing i.e. physical also the fraction should be maintained

So according to the given situation, the last option is correct as the bank keep a portion of the deposits in cash reserves

Which part of the check gives the bank permission to release the money?

Answers

Answer:

And even though all national banks and federally chartered credit unions are subject to the same hold rules, each institution can release your funds sooner at its discretion. By understanding the rules of funds availability, you can ensure you'll have access to your money when you need it.:

If 42 of 500 people who clicked
your add bought a product online,
what would your conversion ratę
be?
A. 2.4%
B. 8.4%
C. 12.8%
D. 15.2%

Answers

Answer:

Conversion rate = 8.4%

Explanation:

Given:

Number of person clicked = 42

Total people = 500

Find:

Conversion rate

Computation:

Conversion rate = [Number of person clicked / Total people]100

Conversion rate = [42 / 500]100

Conversion rate = 8.4%

What does the term 'user
experience' refer to regarding a
website?
A. the overall ease of navigation and ability to
purchase on a company's website
B. the general experience a customer has when
using a product of a business
C. the customer experience when dealing with
customer service representatives

Answers

Answer:b

Explanation:

Which one is not a Function in MS Excel?

MAX
ARG
MIN
SUM

Answers

ARG is not a function I’m familiar with in Excel, however I’m familiar with MAX, MIN, and SUM in Excel.

There for the answer is ARG.

____ reading will increase your focus and concentration, help you understand the reading, and prepare you to study.

Answers

Answer:

Active.

Explanation:

Active reading can be defined as a process which typically involves an individual being focused on his or her study. It is aimed at acquiring knowledge and understanding of a particular subject or topic without distractions.

Hence, active reading will increase your focus and concentration, help you understand the reading, and prepare you to study.

If the food handler has been diagnosed with one of the Big 6 pathogens
they can return to work 24 hours after showing no symptoms.
TRUE
FALSE

Answers

It’s False bro trust me

Answer:

False.

Explanation:

what percentage of CTE learners enroll in post secondary education?​

Answers

Answer:

10th-grade public school students in 2002 who were CTE concentrators in high school, 72 percent enrolled in postsecondary education by 2006, or two years after their expected year of high school graduation, and 84 percent enrolled by 2012, or eight years after their expected year of high school graduation.

Answer:

75% – Percentage of high school students concentrating in a CTE discipline who pursue post-secondary education 43% – Percentage of young workers holding a CTE-related license or certificate who earn more than those holding an associate degree

Explanation:

what's the answer? please help, it's overdue​

Answers

Answer: Honestly in my opinion that's a no

Explanation: because that's there imagine without them they wouldn't be able to get that image up and making profit therefore the player should get a cut of the profit that is made.

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