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
alexandr402 [8]
3 years ago
7

Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

hat the population standard deviation is 29. (a) What is the critical value that corresponds to the given level of confidence? Round your answer to two decimals, and remember that critical values are always positive. ___2.58___ (b) What would be the minimum sample size needed? Round your answer up to the next integer.
Social Studies
1 answer:
ZanzabumX [31]3 years ago
7 0

Answer:

1) Critical valueZ_{\alpha /2} = 2.58  

2) 622.0036

Explanation:

Given data:

confident interval is 99%

population mean is 3 units

standard deviation 29

\alpha = 1 - 0.99 = 0.01

\alpha = 0.01

Critical valueZ_{\alpha /2} = 2.58  

From standard table of Z

b)

Minimum sample size = (Z_{\alpha /2} \times  \sigma / E)^2

= (2.58 \times  (29 / 3))^2

= 622.0036

= 623 (Rounded up to next integer)

You might be interested in
What was the overall consensuses, how worried was Britain about invasion of 1940-1941?
Shkiper50 [21]

The correct answer to this open question is the following.

The overall consensuses about how worried was Britain about the invasion of 1940-1941 was the following.

The general consensus in Britain was that an invasion was imminent. During World War II, the German troops had already captured France, and in England, people considered that it was just a matter of time until the Germans reached the coasts of Greta Britain. That is when Winston Churchill delivered the famous speech "We Must Fight in the Beaches..."

One of those key moments was the Battle of Britain from July 10 to October 31, 1940, in which the Royal Air Force of Britain defeated the German Air Force.

8 0
3 years ago
Martin disclosed something personal to his friend tony. afterward, tony felt as though he had to disclose something personal in
Mrrafil [7]
The feelings of Tony that he is experiencing exemplifies the principle of norm of reciprocity. This is the principle where a person would feel that he or she needs to return a favor after the person whom she or he has favors with. Tony likely feels that he needs to return the favor to Martin because Martin had disclosed something personal to him in which Tony expects that he should do too.
6 0
3 years ago
Women are often victimized by their intimate partners, whether in married or dating relationships. How many high school girls ar
Andrew [12]

The correct answer to this open question is the following.

As your question is so general with no specific reference, we can comment on the following.

According to the organization "Love Is Respect, one of ten students of high school has been hit or slapped by its couple. One in three H.S. students has been a victim of some kind of abuse from its partner. The abuse could have been emotional, verbal, physical, or sexual. And the consequences of these types of aggression last for many years.

Another terrible number is that in one year, approximately 1.5 million of H.S. students have incidents related to physical violence from its romantic partners.

These types of violence start when girls are 12 to 18 years old. And from 16 to 24 years, girls experience the most violent conduct from their partners. And all of this has to change because women deserve the utmost respect.

4 0
3 years ago
Which one is more important: girlfriend<br>best friend ​
natita [175]

Answer:

Bestfriend

Explanation:

They will understand and know the real you much more than your girlfriend i guess. But it depends. Its a complicated thing

3 0
3 years ago
Read 2 more answers
What is the main question James Madison thought about when he was writing the constitution?
Butoxors [25]

Answer:

D

Explanation:

Madison argued strongly for a strong central government that would unify the country.  So, it makes sense that D, should states be tied together loosely or strongly, is the right answer

3 0
3 years ago
Other questions:
  • A glass ____ is a situation that women confront in which their leadership position is precarious.​
    13·1 answer
  • "i understand your concerns, but i've had both the accountants and lawyers look at this and they don't see anything wrong here s
    13·1 answer
  • One critical thinking skill used in the informative interview process isA.identifying assumptions.B.criticizing statements.C.sho
    8·1 answer
  • One of the major issues dividing the federalist and Republican parties was
    14·1 answer
  • Why is the senate called a continuous body?
    8·1 answer
  • This person was a fierce fighter and right-hand man to Robert E. Lee. He fought at the Battle of Bull Run and Chancellorsville.
    7·1 answer
  • a rocket burns fuel to create hot gasses That explode violently out of the rocket engine. This explosion creates trust. Trust is
    12·1 answer
  • What does it mean to say that research is probabilistic?.
    14·1 answer
  • How do you think diversity has influenced the humanities?.
    6·1 answer
  • Hernando wants to teach his dog to come when he calls. To ensure that the behavior will not later become extinct, he should use
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!