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
german
3 years ago
5

John Davis, a manager of a supermarket, wants to estimate the proportion of customers that will be using food stamps at his stor

e. How large a sample is required to estimate the true proportion to within 3% with 98% confidence?
Mathematics
1 answer:
Alchen [17]3 years ago
7 0

 

Usually when encountered with questions that relate with how large a sample should be to yield a significant result is answered by determining the sample size. The sample size is the determination of how much sample is needed for the study to reveal confidence levels of 98% or higher.

Because the population is not given in this proportion, an exact number cannot be revealed. However it might be that the sample is dependent on the nature of the study where Davis plans to exhibit. 

You might be interested in
Sixteen is divided by the sum of a number q and 1
atroni [7]

No context. If you want us to write an expression:

16 / (q+1)

4 0
2 years ago
Help please quickly thank you so much
STALIN [3.7K]

Answer:

120 deg

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve the equation for an ellipse for y. Assume that y > 0. y^2/a^2 + x^2/b^2 = 1
In-s [12.5K]
Multiply each term by a^2b^2:-

b^2y^2 + a^2x^2 = a^2b^2
subtract a^2x^2 from both sides
b^2y^2  = a^2b^2  - a^2x^2
Now divide both sides  by b^2

y^2 =  a^2 -  a^2x^2 / b^2  = a^2 (1 - x^2/b^2)

take positive square root ( because y > 0)

y  = a sqrt(1 - x^2/b^2)
4 0
3 years ago
Read 2 more answers
Convert the following repeating decimal to a fraction in simplest form .31 with the 1 repeating
bekas [8.4K]

Answer:

14/45

Step-by-step explanation:

So we have the fraction:

0.3\bar1=0.31111...

We can do this algebraically. Follow to following steps:

Let's let this number equal to n. Thus:

0.31111...=n

Since there is only 1 digit repeating, let's multiply everything by 10. So:

3.1111...=10n

Now, subtract n from both sides:

3.1111-n=10n-n

On the left, substitute the number for n. On the right, combine like terms:

3.1111...-0.31111...=9n

All of the 1s will cancel. So:

3.1-0.3=9n

Subtract:

2.8=9n

Divide both sides by 9:

n=2.8/9

Remove the decimal by multiplying both sides by 10:

n=28/90

Reduce:

n=14/45

And we're done!

Use a calculator to check:

14/45\stackrel{\checkmark}{=}0.31111...

7 0
3 years ago
On a horizontal number line, numbers are what
Vikentia [17]

Answer:

to the right of zero if postive if negative left

6 0
2 years ago
Read 2 more answers
Other questions:
  • The risk of a child developing cancer is approx 3 in 1500. If there are approx 11,721,722 children, how many have cancer?
    5·1 answer
  • Which expression calculates the time in hours an object takes to travel 38 miles at a speed of 2 m/hm/h ?
    13·1 answer
  • Factor completely <br><br> 81x^2-27x-18
    14·1 answer
  • 17 over 5 switched to a mixed number
    10·2 answers
  • What is the unit rate of 9 strikes in 3 innings?
    5·2 answers
  • The sum of two consecutive integers is no more than 209. What is the larger of the two integers?
    13·1 answer
  • What is 22 divided by 7
    5·1 answer
  • 7x^2 - 21x<br> Factor the Polynomial
    5·1 answer
  • Whats 5 plus 6, i cant find out, its hard
    5·2 answers
  • Is 1/8 and 4/32 a proportion?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!