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
tatiyna
3 years ago
14

An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the

average daily revenue was $675 with a standard deviation of $75. A sample of 30 days reveals a daily average revenue of $625. If you were to test the null hypothesis that the daily average revenue was $675 with a level of significance level of 0.01. Which test would you use and why?
a. Z-test of a population mean.
b. T-test of population mean.
c. Z-test of population proportion.
d. t-test of a population proportion
Mathematics
1 answer:
Bond [772]3 years ago
6 0

Answer:

a. Z-test of a population mean.

Step-by-step explanation:

The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.

This means that we have a large sample, which means that we can consider this to be the standard deviation for the population, which eliminates the t-test, leaving options a and c.

Population mean or proportion?

Mean, as a proportion is a value between 0 and 1, while average revenue may have lots of possible values. So the answer is given by option A.

You might be interested in
Given: AOB is a right angle
Crazy boy [7]

The missing piece of information in the proof is that m∠DOA and m∠BOC are vertical opposite angles.

<h3>How to find vertically opposite angles?</h3>

We want to prove that m∠BOC = 90°.

We are given that m∠AOB is a right angle triangle. Thus;

m∠BOC must also be equal to 90°

Now, since m∠BOC and m∠AOB are right angles, then it means that we must equally say that m∠DOA and m∠BOC are vertical opposite angles and they are as such equal.

Thus, the missing piece of information in the proof is that m∠DOA and m∠BOC are vertical opposite angles.

Read more about vertical opposite angles at; brainly.com/question/24425517

#SPJ1

3 0
2 years ago
Jim spends 3 1/2 days a month away from home if he does this for 6 1/2 months how many days would Jim be away from home
Gelneren [198K]
If you mean 3 months, 4.5 days. But if not, you need to rephrase the question, for it makes no sense.
4 0
4 years ago
Suppose that f(x)=x2 and g(x) =4/5x2. Which statement best compares the graph of f(x)?
Roman55 [17]

Answer:

See below.

Step-by-step explanation:

Are f(x)=x2 and g(x) =4/5x2 correctly written?

This answer assumes they are supposed to be:

f(x)=x^2 and g(x) = (4/5)x^2

If these revisions are correct, g(x) would produce values that are (4/5) of f(x).

See attached graph.

I don't see any of the options for "best statement."

6 0
2 years ago
How long will it take an object dropped from a window to fall a distance of 78.4 meters?
Free_Kalibri [48]
As you said it was dropped so in that case I'll take 78.4 meters as the height..
we know that
h = ut + 0.5*g*t(sqr)
t(sqr) = 78.4/(0.5*9.8) [g = 9.8 ms-2]
t = √16
t = 4
So it'd take 4 seconds
7 0
3 years ago
Read 2 more answers
Please hellppp please someone help me fast​
VikaD [51]
I believe it’s A, a scale factor of 2.

I hope this helps!
5 0
4 years ago
Other questions:
  • The perimeter of a rectangular swimming pool is 154m.its length is 2m more than twice breadth . what are the length and breadth
    10·1 answer
  • Leo decides to buy a car for $9600 with a 5-year finance plan that offers 0% financing for the first yearThe APR after that will
    8·1 answer
  • Choose which of these is the net of a cube.
    12·1 answer
  • If i got an A on my exam and i have a C on my interim what will my grade be now?
    9·1 answer
  • Choose the correct statement about best-fit lines.
    14·2 answers
  • Can someone help me? Please answer in fraction! :D
    14·1 answer
  • Find me the answer please ​
    7·2 answers
  • There are x students in Ms, Smith's class and 3/4 of them like pizza. If 21 of the
    7·1 answer
  • What is the solution to the equation?
    11·1 answer
  • PLLEASE ANSWER THIS FOR ME
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!