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
GREYUIT [131]
3 years ago
11

153 of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary sch

ool students than they do now as high school students. calculate the margin of error, rounded to the nearest tenth of a percent. is it reasonable that the state education department claims the percentage for the entire state is 63%? jusify your answer.
Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
5 0

<u>Answer-</u>

<em>It </em><em>is reasonable</em><em> that the state education department claims the percentage for the entire state is 63%.</em>

<u>Solution-</u>

153 out of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary school students than they do now as high school students.

Here,

x = 153,

n = 258,

Then,

\text{sample proportion}=p=\dfrac{153}{258}=0.5930=59.30\%

And,

\text{Margin Error}=2\times \sqrt{\dfrac{p(1-p)}{n}}

Putting the values,

\text{ME}=2\times \sqrt{\dfrac{(0.5930)(1-0.5930)}{258}}\\\\=2\times \sqrt{\dfrac{(0.5930)(0.407)}{258}}\\\\=2\times \sqrt{\dfrac{0.2414}{208}}\\\\=2\times 0.0341\\\\=0.0682\\\\=6.82\%

The interval would be,

=(59.30-6.82,\ 59.30+6.82)\\\\=(52.48,\ 66.12)

As population proportion p=63% lies in this interval, so it is reasonable.

You might be interested in
ASAP PLZ HELP!!
Dominik [7]

Answer:

A) y² - 5y + 1

B) y² - 5y - 4

C) - 5y + 1

D) - 3y² - 4y - 6

Step-by-step explanation:

Let's call P the unkown polynomial and D the difference. In each case, the following must be true:

y² - 5y + 1 - P = D

<em>A)</em>

y² - 5y + 1 - P = 0

y² - 5y + 1 = P

<em>B)</em>

y² - 5y + 1 - P = 5

y² - 5y + 1 - 5 = P

y² - 5y - 4 = P

<em>C)</em>

y² - 5y + 1 - P = y²

y² - 5y + 1 - y² = P

- 5y + 1 = P

<em>D) </em>

y² - 5y + 1 - P = 4y² - y + 7

y² - 5y + 1 - 4y² + y - 7 = P

- 3y² - 4y - 6 = P

4 0
3 years ago
Read 2 more answers
Solve systems of equations for y and x: <br><br> −5y + 8x = −18<br><br> 5y + 2x = 58​
Natali5045456 [20]

Answer:

(4, 10)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Equality Properties<u> </u>

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

-5y + 8x = -18

5y + 2x = 58

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Elimination</em>

  1. Combine 2 equations:                                                                                      10x = 40
  2. [Division Property of Equality] Divide 10 on both sides:                                x = 4

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [Original equation]:                                                                  -5y + 8(4) = -18
  2. Multiply:                                                                                                             -5y + 32 = -18
  3. [Subtraction Property of Equality] Subtract 32 on both sides:                      -5y = -50
  4. [Division Property of Equality] Divide -5 on both sides:                                y = 10
7 0
3 years ago
The sum of two numbers is 24 and their difference is 2. What are the numbers?
miskamm [114]

Answer:

11 and 13

Step-by-step explanation:

24÷2=12

2÷2=1

12-1=11

12+1=13

13-11=2

13+11=24

5 0
2 years ago
Read 2 more answers
Select all statements thats show the correct reasoning for finding 15 divided by 2/9
Anton [14]
No there is nothing here please provide answers

6 0
2 years ago
The minute hand of a clock 7 inches long to the nearest 10th of an inch how far does the tip of the minute and trouble as time p
RSB [31]

Answer:

The answer to the question is;

The distance the tip of the minute and travels as time progresses from 12:00 to 12:25 is 18.33 in.

Step-by-step explanation:

To solve the question, we note that

Number of minutes in one complete revolution of the clock = 60

Position travel of the minute hand = 12:00 to 12:25 = 25 minutes

Fraction of complete revolution traveled by minute hand = 25/60

Distance of one complete revolution = Circumference of circle = 2·π·r

Length of minute hand = 7 inches = r

Distance of one complete revolution = 2 × π × 7 = 43.98 in

Distance traveled by minute hand = 25/60×43.98 in = 18.33 in.

7 0
3 years ago
Other questions:
  • Special parallelograms
    11·1 answer
  • 35 POINTS FOR CORRECT ANSWER! write the equation of the line in slope-intercept form. (image attached).
    9·1 answer
  • Solve for x: |3x|=12
    6·2 answers
  • Simplify this expression:<br> -2x+3 -(5 - 64).<br> D
    13·1 answer
  • Help can some one do number 10 please
    7·1 answer
  • A cabinet maker used 0.75 gallons of varnish on 10 cabinet doors.At this rate, how many quarts of varnish are required for 25 ca
    5·1 answer
  • Need help with 9 please
    10·1 answer
  • BASED ON THE GRAPH, WHICH STATEMENT IS CORRECT?
    14·1 answer
  • Which number is composite? (9,5,11,2)​
    10·2 answers
  • Solve for m<br> –5m + 10 = –10 − 10 + 10m
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!