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
Stels [109]
1 year ago
5

Please help! I don't understand how to solve this problem

Mathematics
1 answer:
Ilia_Sergeevich [38]1 year ago
8 0

Using the z-distribution, a sample of 142,282 should be taken, which is not practical as it is too large of a sample.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

The margin of error is:

M = z\frac{\sigma}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • z is the critical value.
  • n is the sample size.
  • \sigma is the standard deviation for the population.

Assuming an uniform distribution, the standard deviation is given by:

S = \sqrt{\frac{(4 - 0)^2}{12}} = 1.1547

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

The sample size is found solving for n when the margin of error is of M = 0.006, hence:

M = z\frac{\sigma}{\sqrt{n}}

0.006 = 1.96\frac{1.1547}{\sqrt{n}}

0.006\sqrt{n} = 1.96 \times 1.1547

\sqrt{n} = \frac{1.96 \times 1.1547}{0.006}

(\sqrt{n})^2 = \left(\frac{1.96 \times 1.1547}{0.006}\right)^2

n =  142,282.

A sample of 142,282 should be taken, which is not practical as it is too large of a sample.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

You might be interested in
On one day, the stock of Seraj Food Technologies went up by $30\%.$ The next day, the stock fell by $30\%.$ Over the two days, t
blsea [12.9K]

Since the stock went up by 30% and fell by 30%, the net increase is 0%.  So x = 0.

4 0
3 years ago
What is the value of (Negative one-half)–4?
Alexxandr [17]

Answer: D

The answer is D, 16

7 0
3 years ago
Read 2 more answers
What's 830 divided by 4?
Setler79 [48]
It is 207 remainder 5
5 0
3 years ago
Read 2 more answers
Solve x+4 ≤ 19<br><br> type answer in comments below and post them please.
RoseWind [281]

Answer:

x \leqslant 15

Step-by-step explanation:

To find the answer we have to first group the like terms:

x + 4 \leqslant 19 \:

therefore

x \leqslant 19 - 4

so

x \leqslant 15

4 0
2 years ago
Solve:<br> x - 1<br> _____=4<br> 2
Brut [27]

Answer:

5-1 = 4

4-2= 2

5 0
3 years ago
Other questions:
  • Graph the following y-6=7(x+1)
    9·2 answers
  • If f(x) = x(2x – 1) and g(x) = 2x – 1, find f(x)/g(x).
    6·2 answers
  • $8.07 is 30% of what number?
    5·2 answers
  • Which algebraic expression is equivalent to the expression below?
    10·2 answers
  • What is 9 times 10^6 equal to
    8·1 answer
  • Simplify: (4f - 3 + 2g) - (-4g + 2) *
    7·1 answer
  • The manager of a garden store decides to hold a Buy 3, Get 1 Free sale on vegetable plants. The sale is held for one week and a
    13·1 answer
  • He range R and the maximum height H of a projectile fired at an inclination θ to the horizontal with initial speed v0 are given
    6·1 answer
  • 14. Compute the unit rate for the cost of an apple if 4 apples cost $3.00.
    14·2 answers
  • Angie and her family ordered a meal that cost $80. Angie paid 10% sales tax and left a 15% tip on $80. What was the total cost?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!