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
frez [133]
3 years ago
7

Unknown mean μ

English
1 answer:
Aleonysh [2.5K]3 years ago
4 0

Answer:

The answer is below

Explanation:

The question is not complete, but I will solve a similar question. The question goes as:

A random sample of n measurements was selected from a population with unknown mean µ and known standard deviation σ. Calculate a 90% confidence interval for n = 49, ¯ x = 28, σ = 28

Solution:

A confidence interval is a range of numbers that contains a population parameter.

C = 90% = 0.9

α = 1 - C = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05

The z score of α/2 is the same as the z score 0.45 (0.5 - 0.05) which is equal to 1.65. Hence, the margin of error E is:

E=z_\frac{\alpha}{2}*\frac{\sigma}{\sqrt{n} }  =1.65*\frac{28}{\sqrt{49} } =6.6

The confidence interval = \bar x \pm E=28 \pm 6.6 = (21.4,\ 34.6)

The 90% confidence is between 21.4 and 34.6.

You might be interested in
What tragic examples does Tutu use to illustrate that his nation is a “sadly” divided society? How can you tell that Tutu is fai
maksim [4K]
The examples has to do with his people trying to raise their own point of view when a misundertanding raised to the point of altering their unity. Tutu was right to be fair to both sides in order to be impartial and to raise only onw point of view to remain united
7 0
3 years ago
Read 2 more answers
Change " A washing machine has being bought by him " into active voice​
Pani-rosa [81]

Answer:

He bought a washing machine

Explanation:

__________

6 0
3 years ago
Read 2 more answers
What do you think about Iago? (Othello 1.1-1.3)
Kisachek [45]

Answer: Some literary critics point out that Lago has devilish characteristics.

Explanation:

Lago is the opposite of the divine. Medieval and Renaissance performances of the devil characterize this Shakespearean character. Lago is a liar, telling an imaginative story to manipulate people and bring them to destruction, and sees the most significant vulnerabilities of others and uses them to destroy them. Lago does it all out of love for evil.

He loves when others serve him, especially when they do it unconsciously. Because of his obsession and control over other people, every segment of his life will be imbued with these characteristics. Lago always destroys other lives to ruin his own ultimately. Lago is a hypocrite and a destructive person.

5 0
3 years ago
Help with the answers
sergij07 [2.7K]

A coma will separate her actions, so B is correct. Hope this helps :)

8 0
3 years ago
Read the excerpt from Ernest Hemingway’s “Soldier's Home.” A distaste for everything that had happened to him in the war set in
eimsori [14]

Hemingway conveys double entendre between Krebs's soldier and civilian lives. The excerpt shows the ambiguity or precisely black and white nature of the lives. Krebs cannot do the things in his civil life that he has done in his military life. The author counts the disadvantages of these opportunities of Krebs's civilian life in the given excerpt. In order to escape from this unwanted reality he must become someone else. So that, he must lie and he must leave his formed identity.  

3 0
3 years ago
Read 2 more answers
Other questions:
  • Why is Macbeth both excited and fearful atfer hearing the witches predictions about his future?
    9·1 answer
  • What does the theme beauty of simplicity mean?
    5·1 answer
  • 5. Complete this sentence. "Next time we meet again I will ____" *
    7·1 answer
  • Why isn’t bruno afraid of lieutenant kotler at first?
    7·1 answer
  • Monday: 3 Quotes selected and analyzed<br>​
    5·1 answer
  • Why was Ikemefuna placed in the care of Okonkwo’s family in Things Fall Apart.
    6·2 answers
  • imagine you are a city kid in the early 1900s and have recently moved to a farm with your family write a letter to a friend in t
    6·2 answers
  • Which of the following is not true when comparing and contrasting viewpoints?
    15·1 answer
  • What types of verbs are
    12·1 answer
  • Which sentence states the central idea of the passage?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!