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
mrs_skeptik [129]
2 years ago
8

True or False: When the length of a confidence interval is 3 for inference concerning a mean, the required sample size is4

Mathematics
1 answer:
fredd [130]2 years ago
6 0

If the length of a confidence interval is 3 for inference concerning a mean, the required sample size is (z_\frac{\alpha }{2}*\frac{\sigma}{3} )^2

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

σ = standard deviation, n = sample  size, the margin of error (E) is given by:

E=z_\frac{\alpha }{2}*\frac{\sigma}{\sqrt{n} }  \\\\E=3, hence:\\\\3=z_\frac{\alpha }{2}*\frac{\sigma}{\sqrt{n} } \\\\n=(z_\frac{\alpha }{2}*\frac{\sigma}{3} )^2

If the length of a confidence interval is 3 for inference concerning a mean, the required sample size is (z_\frac{\alpha }{2}*\frac{\sigma}{3} )^2

Find out more on equation at: brainly.com/question/2972832

#SPJ1

You might be interested in
Can someone help me plssssss
Akimi4 [234]

Answer:

16.5

Step-by-step explanation:

5 0
3 years ago
Pls help due today :( 26 points promise
Stels [109]
Answer = 14/8

Step by step explanation
2 x 7/8
= (2x7)/8
= 14/8
6 0
2 years ago
Select correct answer pls^^
alina1380 [7]

It takes 48 hours if 12 people built the same wall.

Please see the attached picture for full solution

Hope it helps

Good luck on your assignment

4 0
3 years ago
Read 2 more answers
Convert 0.4 to a percent. % Check Explain​
Orlov [11]

Answer:

40%

Step-by-step explanation:

0.4=0.40

0.40×100

=40%

5 0
2 years ago
Read 2 more answers
7 + 7 + (-1) = ?<br><br>A. 16<br>B. 10<br>C. 13<br>D. 7
saul85 [17]
7 + 7 + (-1)
7 + 7 - 1
13

Hope this helps :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • A population of 510,000 toads is expected to shrink at a rate of 6.2% per year. Which is the best prediction for the toad popula
    6·2 answers
  • 10 people can paint a building in 5 days. If each person paints as quickly as the others then how much of the building could 7 p
    14·1 answer
  • What is the pattern in the values as the exponents increase?
    6·2 answers
  • Find the equation of the line using y=mx+b form thank you :)
    11·1 answer
  • Which expression has the greater value? Justify your answer. −8 + 3 −8 × 3
    15·1 answer
  • What is the volume of this sphere?
    5·2 answers
  • PLEASE HELP ME!!!!!!!!
    12·1 answer
  • Solve the equation 2/3(9+x)=−5(4−x).
    14·2 answers
  • Questions<br> E<br> Given EA = 8 and AT = 10<br> Find ET
    10·1 answer
  • B<br> с<br> 6x + 1<br> E<br> X + 11<br> D
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!