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
pentagon [3]
2 years ago
5

The most recent poll of 50 randomly-selected members of a school club with a total of 80 members showed that 38 are planning to

vote for Talia as president of the club. Talia correctly determined that the margin of error, E, of the poll using a 95% confidence interval (z*-score 1.96) is approximately 12%.
What is the 95% confidence level for students who are planning to vote for Talia as president of the club?

C = + E
Mathematics
2 answers:
melisa1 [442]2 years ago
5 0

Answer with Explanation:

Total number of members in School Club = 80 members

Number of member randomly Selected,that is sample size used  (P) = 50 members

Number of members who are planning to vote for Talia = 38 members

Z Score for 95% confidence interval =1.96

it is given that Margin of Error ,E,of the poll using a 95% confidence interval=12%

E=\frac{Z*\sigma}{\sqrt{P}}\\\\ \frac{12}{100}=\frac{1.96 * \sigma}{\sqrt{50}}\\\\ \sigma=4.32890

Standard Deviation=4.3 (approx)

→95% confidence level for students who are planning to vote for Talia as president of the club lie between → 38 + 4.3 = 42.3 to 38 -4.3=33.7.

→So, members which will vote for Talia as president of the club lies between minimum of 33 members and maximum of 42 members.

boyakko [2]2 years ago
3 0

Answer: D) between 64% and 88%

Vote For Brainliest Please

You might be interested in
Please answer this question ONLY IF YOU KNOW THE ANSWER!! 40 points and brainliest!!
ololo11 [35]

Answer:

2/6 is the answer you are looking for.

Step-by-step explanation:

The is 1 tile that is needed and two others that aren't so you would have 1/3 which means one out of three outcomes. And you have two spins which makes you multiply the fraction by two. Giving you 2 out of 6 outcomes.

6 0
2 years ago
Create a proportion using the form = to represent the following word problem.
Anna11 [10]
Answer :
x = 53.85

Step by step explanation:
If 78% of x (some numbers) is equal to 42, then we must set this as an equation to find it.

1) Rewriting 78% as a fraction and considering that when we say 78% of some number (x) we mean a product.
78% = 78/100 ➡️ 78/100x = 42

2) Then we can go on :
100 * 78/100x = 42 * 100
78x = 4200
78x/78 = 4200/78 ➡️ x = 53.85

3) Alternatively, simply dividing 42 by 0.78 (78%) would come to the same result :

42/0.78 = 53.85
4 0
2 years ago
Read 2 more answers
Write 27 + 21 as a product using the GCF as one of the factors.
levacccp [35]
The greatest common factor is 48
8 0
2 years ago
A square board was attached to a wall. The board was divided by four squares and each square was colored either black or white.
PtichkaEL [24]

Answer:

24 combinations

Step-by-step explanation:

For this problem, you use factorials. Factorials are when you multiply every number below it except zero. So like the factorial of 3 or 3! is 3*2*1 is 6.

Factorials are used to figure out how many combinations there are of something. So for you, we have 4 different quadrants so we write that as 4! (! is the sign for factorials.)

By the way, welcome to brainly.  

4 0
2 years ago
Find the explicit formula for the given sequence.<br> 1,5, 25, 125, ....
Lyrx [107]

Answer:

you keep multiplying by five

Step-by-step explanation:

So 1 x 5 is five, 5 x 5 is 25, 25 x 5 is 125, so on and so forth.

8 0
3 years ago
Other questions:
  • Paul creates the diagram to help him factor 4x2 + x – 5 by using double grouping. His diagram is incomplete. A 2-column table wi
    9·1 answer
  • Cscθ - sinθ = _____
    5·1 answer
  • B) What is the value of f(n-1)?
    14·1 answer
  • Ms. Chen is planning to take her camp group on a field trip to Pottery Bayou where each person will create her own piece of art
    6·1 answer
  • Derek is writing a report on cell phone usage. He collects data from a random sample of seventh graders in his school, and finds
    11·1 answer
  • Point A is located at (1, 5), and point A′ is located at (-2, 1). What is the distance from B to B′ ?
    14·1 answer
  • A total of 2,000 square feet is to be enclosed in two pens, separated by a chain link fence. The outside walls are to be constru
    8·1 answer
  • You are building a ramp that must cover a horizontal distance of exactly 17 feet. The angle of the ramp from the ground is 24°.
    11·1 answer
  • What is the length of side x?
    12·2 answers
  • Can someone fill this out thanks
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!