In sample of 200 economists, 147 choose the FRED database as the most popular economic database. Calculate the margin of error for a 97% confidence interval.

Answers

Answer 1

Answer: 0.9577

Step-by-step explanation:

Formula for margin of error (E):

[tex]E= z^*\sqrt{\dfrac{p(1-p)}{n}}[/tex] , where p = sample proportion, n =sample space, z* critical z-value.

Given: n= 200

[tex]p=\dfrac{147}{200}[/tex]

Critical value for 97% confidence level = 2.17

Margin of error (E) = [tex]2.17\sqrt{\dfrac{147}{200}(1-\dfrac{147}{200})}[/tex]

[tex]=2.17\sqrt{\dfrac{147}{200}(\dfrac{53}{200})}\\\\=2.17\times \sqrt{0.194775}\\\\=2.17\times0.441333207452\approx0.9577[/tex]

Hence, the margin of error for a 97% confidence interval = 0.9577


Related Questions

5/8 times 1/12. give answer in simpliest form

Answers

Answer:

5/96

Step-by-step explanation:

5/8*1/12
Multiply across so 5*1 and 8*12
Answer is 5/96

Can someone help me

Answers

Answer:

Number of stars: 2+2+2+2+2+2

=6×2

Step-by-step explanation:

The stars are added in pairs of two. The pair that is 2+2+2+2+2 is five groups of 2 or 2 groups of five.

Since another pair of two wad added, there is one more pair. Instead of 5×2

Which means 5 groups of 4, it is not 6 groups of 2. I hope I helped you! Have a good day :3

Please helpppppp.....

Answers

Answer:

1. 1/2(3n-5)

2. -13

Step-by-step explanation:

1. 1/2(3n-5)

2. 1/2(-21-5)

1/2(-26)

1/2x-26

-13

in a poll last year, the residents of a town were asked to rate the mayor on a scale of -10 to 10 points. The mayor received an average
approval rating of -2.5 points. This year, the mayor's average approval rating decreased by 0.75 points.
What is the mayor's average approval rating this year?
Enter your answer in the box.

Answers

Answer:

-3

Step-by-step explanation:

   

Simplify
12e^5 ÷ 3e^3​

Answers

Answer:

[tex] 4 {e}^{2} [/tex]

Step-by-step explanation:

[tex]12e^5 ÷ 3e^3 \\ \\ = \frac{\cancel {12} {e}^{5} }{\cancel 3 {e}^{3} } \\ \\ = 4 {e}^{5 - 3} \\ \\ = 4 {e}^{2} [/tex]

Diane is making chair covers to sell. She has a bolt of fabric that is 20 yards long. If each chair requires 3 2/5 yards of fabric, how many chair covers will Diane be able to make

Answers

Answer: alo mwen panse ke li ta dwe 3/6

Step-by-step explanation:

ou konnen mwen te u konsa 7 ajoute ke epi pou yo jwenn 10 shawty

The number of chair covers Diane will be able to make is 5.

What is a fraction?

A fraction is written in the form of a numerator and a denominator where the denominator is greater that the numerator.

Example: 1/2, 1/3 is a fraction.

We have,

Length of the fabric = 20 yards

Length of fabric needed for each chair cover = 3(2/5) yards

The number of chair covers that can be made with 20 yards.

= 20 ÷ 3(2/5)

= 20 ÷ 17/5

= 20 x 5/17

= 100/17

=  5.8

= 5

Thus,

The number of chair covers is 5.

Learn more about fractions here:

https://brainly.com/question/24370499

#SPJ2

Solve for w in the proportion 32/40 = 28/w W= ?

Answers

w= 35 this is because it is and i need 20 characters i don’t know how to explain but it is 35

32    =   28  

40          W

cross multiply so that 32W = (40*28)

then                                32W = 1,120

now divide by 32 on both sides

                                      32W = 1,120

                                      32          32      

so now it's only                W = 1,120/32

which simply equals        W = 35

THE FINAL ANSWER IS 35 I suggest you practice this question because throughout your educational career you will need to be able to solve this. Thank me later & good luck

Can someone help me on this plzzzzzzzzzz !

Answers

The answer is C because when u add all those up it makes this answer

This list shows the number of years that 99 U.S. Supreme Court Justices served.
0
4
6
8
13
15
18
22
26
31
1
4
6
9
13
15
19
23
26
32
1
4
6
9
14
16
19
23
27
33
2
5
7
9
14
16
20
23
28
33
2
5
7
10
14
16
20
23
28
33
2
5
7
10
14
16
20
23
28
34
3
5
7
10
15
17
20
24
29
34
3
5
8
11
15
17
20
24
30
34
3
5
8
13
15
18
21
26
30
36
4
5
8
13
15
18
21
26
31


Miguel is making a frequency table of this data. He decides to group the years in intervals of 5 beginning with 0 to 4, 5 to 9, 10 to 14 and so on. How many intervals will he need all together?
a.
5
c.
7
b.
6
d.
8

Answers

Answer:

8

Step-by-step explanation:

0

4

6

8

13

15

18

22

26

31

1

4

6

9

13

15

19

23

26

32

1

4

6

9

14

16

19

23

27

33

2

5

7

9

14

16

20

23

28

33

2

5

7

10

14

16

20

23

28

33

2

5

7

10

14

16

20

23

28

34

3

5

7

10

15

17

20

24

29

34

3

5

8

11

15

17

20

24

30

34

3

5

8

13

15

18

21

26

30

36

4

5

8

13

15

18

21

26

31

a.

5

c.

7

b.

6

d.

8

Answer:

The correct answer is:

Step-by-step explanation:

D.)8

Eight times the sum of 6 and some number is 192. What is the number?

Answers

Answer:

18

Step-by-step explanation:

8(6+x)=192

48+8x=192

Answer:

The answer is 18

Step-by-step explanation:

192 divided by 8 is 24, 24 - 6 is 18.

8 x (6 + 18) = 192

when solving the system using the additional/elimination method, which variables will cancel?

Answers

Answer:

the x terms

Step-by-step explanation:

there is a +x and a -x.

x-x=0,

x will cancel out

1) 4n - 2n = 4
Solve the equation.

Answers

Answer:

n=2

Step-by-step explanation:

2n=4

n=2

Answer:

= 2

Step-by-step explanation:

Please mark brainliest :)

Hope this helps

Have a great day!!

A and B working together complete a work in 35 days. If A takes 60 days to complete it, how long would B alone tale to complete
a) 64 days
b) 72 days
c) 81 days
d) 84 days
plz ......I will surely follow you, if you answer with explanation.​

Answers

Answer:

Efficiency (Work done per day) for :

( ˘ ³˘)/

A & B together = 1/35th

A alone = 1/60th

Thus, efficiency of B alone = Total - A’s efficiency

Step-by-step explanation:

OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th

Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.

need help asap please !!

Answers

V=31

Explanation
3(31)-71=22 and 31-9=22 meaning that they both have a side length of 22

through: (6, 2), perpendicular to
y = -x-5
in slope intercept form

Answers

Answer:

y = x-4

Step-by-step explanation:

y = -x-5

Slope of line is -1.

Slope of perpendicular to line is 1.

Point-slope equation for line of slope 1 that passes through (6,2):

y-2 = 1(x-6)

Rearrange equation to slope-intercept form:

y = 1(x-6) + 2

y = x-4

URGENT URGENT PLEASE

Answers

Answer:

Question 15: x = 17

Question 16: area = 5610 units

Step-by-step explanation:

Question 15:

The perimeter is the sum of all sides of a triangle.

It is given that the perimeter is 374 units.

[tex]p = 8x - 4 + 9x + 4 + 4x + 17[/tex]

[tex]374 = 8x - 4 + 9x + 4 + 4x + 17[/tex]

Add all the like terms.

[tex]374 = 21x + 17[/tex]

Subtract 17 from both sides.

[tex]357 = 21x[/tex]

Divide by 21 from both sides.

[tex]17 = x[/tex]

Question 16:

The area of a triangle can be found by using the following formula:

[tex]a = \frac{1}{2} bh[/tex]

(where a is the area, b is the base, and h is the height)

Using the value of x you just found previously (17), you can calculate the base and height by substituting 17 with x in their respective equations.

[tex]h = 8x - 4[/tex]

[tex]h = 8(17) - 4[/tex]

[tex]h = 134[/tex]

[tex]b = 4x + 17[/tex]

[tex]b = 4(17) + 17[/tex]

[tex]b = 85[/tex]

Now that you found the base and height, substitute the values, 134 and 75, into the area of a triangle formula.

[tex]a = \frac{1}{2} bh[/tex]

[tex]a = \frac{1}{2} (85)(132)[/tex]

[tex]a = 5610[/tex]

Write the slope-intercept form of the equation y – 2 = 3(x – 4).

Answers

Answer:

y= 3x -10

Step-by-step explanation:

distribute the 3 then you get y-2= 3x-12

then add the 2 from the other side and you get your answer

Ok I need help!!


Angie is goin to the store to buy food. Her mom gave her 10$ for food and 3$ for whatever she wanted. She buyed a book for 1,50$, and it was on 60%. And she also buyed some candy for 1$. She buyed food for 9,28$

SO the questan is: is she over or under the price?
Im not good at math but whatever

Answers

Answer:

she would be under $13

Step-by-step explanation:

1.50+1= 2.50+9.28= 11.78 leaving her with a remaining balance off $1.22

log 8 - 3 logt = 3
3​

Answers

Answer:

I think so

Step-by-step explanation:

Zada needs to simplify the expression below. 72 – 4 × 12 ÷ 6 Which solution for Zada’s expression is correct?
F. 408, because 72 – 4 is 68, 12 ÷ 6 is 6, and 68 × 6 is 408

G. 64, because 4 × 12 is 48, 48 ÷ 6 is 8, and 72 – 8 is 64

H. 4, because 4 × 12 is 48, 72 – 48 is 24, and 24 ÷ 6 is 4

J. 136, because 72 – 4 is 68, 68 × 12 is 816, and 816 ÷ 6 is 136

Answers

Answer:

order of operations matter here so

72 - 4 × 12 ÷ 6

start with 4 × 12 (which equals 48)

72 - 48 ÷ 6

next is 48 ÷ 6. (which equals 8)

72 - 8 = 64

so g is correct

Forty people were randomly sampled and surveyed as to the number of pets in their household. The results are listed below.
1
1
0
4
1
0
1
2
3
5
2
0
2
0
3
1
2
0
0
1
0
4
0
0
3
1
0
0
2
1
0
0
4
0
1
3
5
0
2
1


What is the BEST frequency table for these data?
a.
A 3-column table with 6 rows titled Pet Survey. Column 1 is labeled Number of pets with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled Tally with entries 15, 10, 6, 4, 3, 2. Column 3 is labeled Frequency with entries 15, 10, 6, 4, 3, 2.
c.
A 3-column table with 6 rows titled Pet Survey. Column 1 is labeled Number of pets with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled Tally with entries 10, 15, 4, 6, 2, 3. Column 3 is labeled Frequency with entries 10, 15, 4, 6, 2, 3.
b.
A 3-column table with 6 rows titled Pet Survey. Column 1 is labeled Number of pets with entries 15, 10, 6, 4, 3, 2. Column 2 is labeled Tally with entries 15, 10, 6, 4, 3, 2. Column 3 is labeled Frequency with entries 0, 1, 2, 3, 4, 5.
d.
A 3-column table with 6 rows titled Pet Survey. Column 1 is labeled Number of pets with entries 10, 15, 4, 6, 2, 3. Column 2 is labeled Tally with entries 10, 15, 4, 6, 2, 3. Column 3 is labeled Frequency with entries 0, 1, 2, 3, 4, 5.

Answers

can you show a picture of the world pls :)

Answer:

a

Step-by-step explanation:

edge

Please answer accurately and show work if you can

Answers

Answer:

A. a - 3 ≤ -5

Step-by-step explanation:

Move all terms with a to the right side of the inequality

The linear scale factor of two similar solids is given. Then the surface area and volume of the smaller figure are also given. Find the surface area and volume of the large figure.

Scale factor: 4:5

Surface area: 160

volume: 704

Surface area: ?

volume: ?

Answers

Answer:

Surface area: 250

Volume: 1375

Step-by-step explanation:

Scale factor: 4:5

This means that the dimensions of the larger figure are 5/4 of those in the smaller figure.

Surface area:

The surface area is found multiplying the square of the change(5/4) by the original surface area(160). So

[tex]S = (\frac{5}{4})^2 \times 160 = \frac{25}{16} \times 160 = 25 \times 10 = 250[/tex]

Volume:

The volume is found multiplying the cube of the change(5/4) by the original volume(704). So

[tex]S = (\frac{5}{4})^3 \times 704 = \frac{125}{64} \times 704 = 125 \times 11 = 1375[/tex]

write the 0.216 in the form of p by q​

Answers

Answer:

27/125

Step-by-step explanation:

Given the decimal value 0.216, we are to express as a fraction in the fofrm of p/q

0.216 = 216/1000

216/1000 = 2 * 108/2 * 500

216/1000 = 108/500

108/500 = 4*27/4*125

108/500 = 27/125

Hence the expression in form p by q is 27/125

Who can answer this question for me please

Answers

Answer:

B

Step-by-step explanation:

enumerate the different angle pairs formed when two lines are cut by a transversal, then explain the relationship of their measurement

Answers

Answer:

alternate interior angles and corresponding angles.

Step-by-step explanation:

two alternate interior angles are equal with each other and two corresponding angles are also equal with each other.

Find the measure of one interior angle for a regular 21 gon

Answers

Answer:162.9

Step-by-step explanation:I gotchu

What is the volume of a rectangular pool that is 20.00 meters long, 12.00 meters deep, and 13.00 feet wide (1 meter

Answers

Answer:

240 m³

Step-by-step explanation:

volume = length × width × depth

240 m³ = 20 m × 1 m × 12 m

Find the value for the following determinant.





-5
5
11

Answers

Answer:

5

Step-by-step explanation:

So you have cross the multiply and subtract 2×4-3×1 solve

Solve the following equation. Explain the steps you used to solve.

6x−2=−3x+7

Answers

Answer:

X=1, i'm not sure if it's correct i didn't check it, okay i just plugged it in, x is = to 1

Step-by-step explanation: First you have to get the variable to one side of the equation by using the inverse operation of subtraction which is addition and add -3x to 6x making it 9x, then from there continue to use inverse operations.

Answer:

x=1

Step-by-step explanation:

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