1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tasya [4]
3 years ago
13

a random sample of 65 high school students has a norma distribution. The smple mean average ACT exam score was 21.4 with a 3.2 s

ample standard deviation. Construct a 90% confidence interval estimate of the population mean average ACT exam and write a sentence to explain the confidenve interval.
Business
1 answer:
gulaghasi [49]3 years ago
3 0

Answer:

90% Confidence interval:   (20.7376 ,22.0624)

Explanation:

We are given the following information in the question:

Mean, μ = 21.4

Standard Deviation, σ = 3.2

Sample size, n = 65

We are given that the distribution of ACT exam score is a bell shaped distribution that is a normal distribution.

90% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 64 and}~\alpha_{0.10} = \pm 1.669 

21.4 \pm 1.669(\frac{3.2}{\sqrt{65}} ) = 21.4 \pm 0.6624 = (20.7376 ,22.0624)

You might be interested in
Question 1
Svetach [21]

1. An example of bartering is Sarah trades her apple for Ava's bag of chips.

2. Gold has historically functioned as money because it is a medium of exchange.

3. In the hypothetical economy, rice is said to be a commodity money.

4. When Pudding cups serve as a unit of account, it means that the price of other lunch items is expressed in quantities of pudding cups.

5. The difference between the U.S. dollar, and a U.S. gold certificate is a  U.S. dollar does not have value in addition to its value as money.

Trade by barter is when people exchange goods with goods. Money is not used in a trade by barter. Trade by barter was used before the invention of money. For example, a trade by barter occurs when Sarah trades her apple for Ava's bag of chips.

Commodity money is money for which its value comes from the commodity from which it is made.

Fiat money is currency whose value is not backed up by any asset. Representative money is money whose value is backed up an asset.

Money can be described as something that is accepted as a means of payments for products.

 <em><u>Functions of money </u></em>

1. Medium of exchange: money serves as a medium of exchange when it is accepted as payment for goods and services. For example, 2 ounces of gold is accepted as means of payment for a dress.  

2. Unit of account: money can be used to determine the value goods and services, For example, 2 cups of puddings is equivalent to plate of fruits.  

3. Store of value: money can retain its value over the long term, this it can be used as a store of value.

To learn more about money, please check: brainly.com/question/14816216?referrer=searchResults

5 0
3 years ago
Bettina Amman is a sales consultant. She travels all over the country selling her company’s products. Her total monthly expenses
mamaluj [8]

Answer:

a. $7,382.40

Explanation:

With regards to the above,

Bettina Amman 's average monthly expenditure calculation is shown below;

= Total monthly expenses / Number of months

= $4,356.01 + $9,011.20 + $8,780 / 3

= $7,382.40

Therefore, Bettina Amman's average monthly expenditure is $7,382.40

7 0
3 years ago
A __________ describes the minimum qualifications a person must have to perform the job successfully.
Katena32 [7]
The correct answer here would be a job specification. 
5 0
3 years ago
Jay's new loan to purchase a property includes the seller's existing mortgage. What type of loan is this
timurjin [86]

The type of loan that this is known to represent is what is referred to as the wraparound mortgage loan.

<h3>What is the wraparound mortgage loan?</h3>

This is the type of mortgage that has to do with the fact that the borrower is financing another loan when they have not been able to finance the original mortgage itself.

This type of loan is beneficial to a person given that they would be able to get a system of loan that may not have been possible before.

Hence we have to conclude that Jays financing a property when he has an existing mortgage is what is called the wraparound mortgage loan.

Read more on the wraparound mortgage loan here:

brainly.com/question/14454865

#SPJ1

8 0
1 year ago
Which of the following is NOT a step in the strategic planning process?A) defining the company missionB) setting company objecti
Colt1911 [192]

Answer:

Which of the following is NOT a step in the strategic planning process?

E) evaluating all members of the value chain

Explanation:

Strategic planning is an organization's process of defining its strategy, or direction, and making decisions on allocating its resources to pursue this strategy. It may also extend to control mechanisms for guiding the implementation of the strategy

4 0
3 years ago
Other questions:
  • Abel was employed as a security guard for Seep Corporation. Abel's job was to guard a fenced-in area and to use force to keep in
    15·1 answer
  • Tedd E. Bear has an annual salary of $48,000 with no other loans outstanding. Using the 25% guideline from class and with a 20%
    12·1 answer
  • Answer this question based on the dividend growth model. If you expect the market rate of return to increase across the board on
    11·1 answer
  • Suppose that jack, sophia, and hal enter into a contract to close on the business without the non-competition agreement. jack st
    5·1 answer
  • On June 1, 2021, Royal Property Management entered into a one-year contract to oversee leasing and maintenance for an apartment
    9·1 answer
  • Government survey takers determine that typical family expenditures each month in the year designated as the base year are as fo
    14·1 answer
  • xercise 7-24 (Static) Assigning Costs to Jobs (LO 7-1, 2) Forest Components makes aircraft parts. The following transactions occ
    10·1 answer
  • On January 1, 2018, Tiffany Academy instituted a defined benefit pension plan for its employees. The annual service cost for eac
    14·1 answer
  • Answer gets brainliest
    15·2 answers
  • Transactions that affected Barter Company’s stockholders’ equity during 2015, the first year of operations, follow.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!