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
Anna71 [15]
2 years ago
15

A survey claims that the percent of an entire population that agrees with redeveloping the city park is likely between 49.1% and

57.5%. The remainder of the people in the survey were against redevelopment. How many people were surveyed?
Mathematics
1 answer:
kumpel [21]2 years ago
7 0

Answer:

<u>567</u> people were surveyed.

Step-by-step explanation:

Given:

A survey claims that the percent of an entire population that agrees with redeveloping the city park is likely between 49.1% and 57.5%.

Now, to find total people who were surveyed.

<em>According to survey percent of population agrees between = 49.1% to 57.5%.</em>

So, we need to find the error of margin:

\frac{57.5\%-49.1\%}{2}

=\frac{8.4\%}{2}

=4.2\%.

Let the number of people surveyed be n.

Now, to get the number of people surveyed:

4.2\%=\frac{1}{\sqrt{n} }

\frac{4.2}{100}=\frac{1}{\sqrt{n} }

0.042=\frac{1}{\sqrt{n} }

<em>By cross multiplying we get:</em>

<em />\sqrt{n}=\frac{1}{0.042}<em />

<em />\sqrt{n}=23.81<em />

<em>Using square root on both sides we get:</em>

n=566.91.

<u>Approximately:</u>

<u />n=567.<u />

Therefore, 567 people were surveyed.

You might be interested in
What is the nth term of quadratic sequence 4 7 12 19 28
Anni [7]
We find the first differences between terms:
7-4=3; 12-7=5; 19-12=7; 28-19=9.
Since these are different, this is not linear.
We now find the second differences:
5-3=2; 7-5=2; 9-7=2. Then:

Since these are the same, this sequence is quadratic.
We use (1/2a)n², where a is the second difference:
(1/2*2)n²=1n².

We now use the term number of each term for n:
4 is the 1st term; 1*1²=1.
7 is the 2nd term; 1*2²=4.
12 is the 3rd term; 1*3²=9.
19 is the 4th term; 1*4²=16.
28 is the 5th term: 1*5²=25.

Now we find the difference between the actual terms of the sequence and the numbers we just found:

4-1=3; 7-4=3; 12-9=3; 19-16=3; 28-25=3.

Since this is constant, the sequence is in the form (1/2a)n²+d;
in our case, 1n²+d, and since d=3, 1n²+3.
The correct answer is n²+3
7 0
3 years ago
Any1 know the answers?
Keith_Richards [23]
One apple 10 fingers six flowers
4 0
3 years ago
Read 2 more answers
Robert has 1/4 of a bag of chips. He wants to share the remaining chips with himself and 2 friends. What fraction of a bag of ch
Aleksandr [31]

Answer:

1/12

Step-by-step explanation:

1/4÷ 3= 1/4 x1/3=1/12

5 0
2 years ago
Need ASAP plz help!! These are the numbers you use. <br>15 27 28 31 34 42 52
Dahasolnce [82]

im sorry but did you ever get the answer?


6 0
3 years ago
A diver descended at a constant rate of 16.05 feet every 3 minutes. Which of the following is true?
bekas [8.4K]
<span>Determine the lower limit of the 95% interval for the true mean weight. ... A diver descended at a constant rate of 12.24 feet every 3 minutes. .... weight of 16.05 ounces. at the 5% level of significance can we conclude that ...</span><span>

</span>
5 0
3 years ago
Other questions:
  • hallie has 10 times as many pages to read for her homework assignment as Janet altogether they have to read 264 pages how many p
    9·1 answer
  • Every square meter of solar paneling produces 0.2 kilowatts of electricity. Which of the following models this situation?
    7·1 answer
  • Apply the distributive property to create an equivalent expression. ( 1 -2g +4h)x5
    11·2 answers
  • Carey is trying to decide between two guitars. The first had an original price of $160, but is on sale for $100. The second had
    15·2 answers
  • Alex eats 5 servings of fruits and vegetables each day at this rate ,how servings of fruits and vegetables does he eat in 12days
    11·1 answer
  • Which list shows the triangles in order from greatest area to least area
    15·1 answer
  • Mom and Dad have four daughters, and each daughter has one brother. How many people are in the family?
    14·1 answer
  • A speed skater covered 1500 meters in 106.43 seconds.Whats the unit rate in meters per second?CAN SOMEONE HELP ASAP
    11·2 answers
  • The salaries Marc has earned in the past 4 years are shown.
    5·1 answer
  • Please help me and pls do both
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!