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
Nimfa-mama [501]
3 years ago
14

A poll was conducted to determine what percentage of the peoplesupport a certain candidate for the U.S. Senate.400 people were s

urveyed, and44% of them said they support thecandidate. If we require a confidence level of99%, what margin of error do we report?
Mathematics
1 answer:
seropon [69]3 years ago
6 0

Answer: 0.064

Step-by-step explanation:

The formula to find the margin of error :-

E=z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}

Given : Significance level : \alpha=1-0.99=0.01

Critical value : z_{\alpha/2}=2.576

Sample size : n=400

The proportion of people support the candidate :p=0.44

Then , E=(2.576)\sqrt{\dfrac{0.44(1-0.44)}{400}}\approx0.064

Hence, Margin of error = 0.064

You might be interested in
What multiplies to negative 90 and adds to negative 5
Schach [20]
Dont mind the sign until fourth step

First step: find divisibles of 90
1,2,3,5,6,9,10,15,18,30,45,90

Second step:find the pairs
1*90,2*45,3*30,5*18,6*15,9*10

Third step: find which one has a difference of 5
None of them is (expand this question more so i can help you)
5 0
3 years ago
What is the estimate of 137,638 plus 52,091
polet [3.4K]
The answer is 189,729
If to be rounded answer would be 190,000 I would say best estimate would be 180,000
3 0
3 years ago
Read 2 more answers
What is the slope of a line that goes through the points (2, 5) and (8, 6) ?
jenyasd209 [6]

Answer:

m = 1 / 6

Step-by-step explanation:

Use this formula y2 - y1 / x2 -x1 to find the slope.

6 - 5 / 8 -2 = 1/6

8 0
3 years ago
I figured out part A each notebook is $2.75 and each pencil is $1.10 but I need some help on part B. I figured out that he can b
tangare [24]

Answer:

2 notebooks

Step-by-step explanation:

I understand you already figured out that it was 3 notebooks, but when I calculated it, I believe he could only buy 2...

Personally, I would show my work by first doing the calculation: 2.75[1 notebook price]+ (3[pens/pencils per notebook]*1.10[pen/pencil cost])= $9.075 per notebook and 3 pens

If you then showed that you multiplied 9.075 by 2... you would get $18.15 which is the closest you could get to his limit of $22 without going over

If we applied your answer of 3 notebooks, then the total would be $27.225 which goes over the money limit.

Hope I helped!

6 0
3 years ago
Read 2 more answers
3x - 2y + 8<br> (5y - 1 + 3x)<br> Add the polynomials
ololo11 [35]

Answer:

hope it helps I have made it in pic

7 0
2 years ago
Other questions:
  • Which expression means 56? A) 5 × 5 × 5 × 5 × 5 × 5 B) 6 × 6 × 6 × 6 × 6 × 6 × 6 C) 6 × 5 D) 5 6
    10·2 answers
  • Rachel saved money to buy art supplies. She used 1/3 of her savings to buy brushes. She used 3/5 of her savings to buy paint. Wh
    12·1 answer
  • I am helping my sister with home work and I don’t rennet how to do this. Here is the question-“ there are 24 dogs in the dog sho
    7·1 answer
  • Find the value of |5| - 4(3 to the second power - 2).
    13·2 answers
  • A busload of campers stopped at a dairy stand for ice cream. They ordered 74 cones, some soft serve at 1.50 each and the rest ha
    7·1 answer
  • Volume of cone is 1,610.82 cubic meters what is the height
    8·1 answer
  • Help in don’t know what to do
    6·2 answers
  • In this diagram, circle A had a radius = 11.3 and BC = 13.3. BC is a tangent line, calculate the distance of CD.
    12·1 answer
  • Find the square of 2a plus 3b​
    11·2 answers
  • Figure 1 and figure 2 are two congruent parallelograms drawn on a coordinate grid as shown below:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!