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
liraira [26]
3 years ago
11

In a survey of 850 students in a school, 90% reported having pets at home. If the margin of error is 3.4%, what is the interval

that is likely to contain the exact percent of all people who have pets at home?
Between 3.4% and 90%
Between 90% and 93.4%
Between 86.6% and 90%
Between 86.6% and 93.4%
Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0

Answer:

Step-by-step explanation:

Taya2010 [7]3 years ago
6 0

Answer:

<h3>Between 86.6% and 93.4%</h3>

Step-by-step explanation:

<h3>To obtain the population proportion from the sample, we calculate the confidence interval ; </h3><h3> </h3><h3>Confidence interval = phat ± margin of error </h3><h3> </h3><h3>Phat = 90% ; margin of error = +3.4% </h3><h3>  </h3><h3> 90% ± 3.4% </h3><h3> </h3><h3>(90 - 3.4)% ; (90 + 3.4)% </h3><h3> </h3><h3>86.6% ; 93.4%</h3>
You might be interested in
10% of the passengers on a fly with us airlines flight are in first class. If there are 40 passengers in first class, how many t
MissTica

Answer:

400 passengers

Step-by-step explanation:

To solve the problem, a proportion would be best!

First, let's set up the left side of the proportion. Percents, when used in parts, are always part of 100%, making 100% a whole. We'll use both 10% and 100% as our first fraction, which should look something like this:

\frac{10p}{100w} (with <em>p </em>standing for <em>part </em>and <em>w</em> standing for the <em>whole</em>)

Next, let's set up the right side of our proportion. We'll use the 40 for our part and x for our whole since that is the number we are solving for. The proportion should now look like this:

\frac{10p}{100w} = \frac{40p}{x}

To solve, just cross multiply and divide! Multiply 40 by 100 to give you 4,000. Next, divide 4,000 by the remaining 10 to give you a final answer of 400. If 40 passengers on the flight are in first class, then there are 400 total passengers. Hope this helps!

7 0
2 years ago
7-8x+5=-4 ~Solving Equations
klio [65]
Ans = 2 move 8x to other side and 4 to other side
5 0
3 years ago
What is 6.78 and 8.21 rounded to tenth nearest tenth
yaroslaw [1]
Here is your answer:

6.78 rounded to the nearest tenth = 7.00 because the 7 in 6.78 is greater then five.

8.21 rounded to the nearest tenth= 8.00 because the 2 in 8.21 is NOT greater than five.
4 0
3 years ago
Read 2 more answers
444444+44444444333333333333333
WARRIOR [948]

Answer:

4.4444444e+22

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Can Anyone Help me with this I believe I got the first one correct If not correct me please
olga_2 [115]

Answer:

the second one I think

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • You have a bowl filled with 100 balls, which are colored red or blue. you have 50 red and 50 blue balls. you randomly select a b
    14·1 answer
  • Plz help!!
    13·1 answer
  • What is the product?<br><br> 1# −4⋅2⋅(−9)<br> 2# −72<br> 3# −11<br> 4# 72<br> 5# 144
    5·1 answer
  • Write the fraction 3/5 as an equivalent fraction with denominator 30
    5·2 answers
  • Which methods correctly solve for the varlable x in the equation 3x + 2 = 14?
    14·1 answer
  • What is 3 divided by 7 times 56 minus 45
    11·1 answer
  • If a circle has a radius of 9 feet, what is the diameter ? *
    15·1 answer
  • Please please help!!, please show help if possible :D
    8·1 answer
  • How do I solve this<br> (please show ur work) <br><br><br> 11x+7<br><br> 9x+13
    15·1 answer
  • Solve for C <br><br> -4c - 2 = 10 - 8c
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!