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
Firlakuza [10]
3 years ago
8

A research organization keeps track of what citizens think is the most important problem facing the country today. They randomly

sampled a number of people in 2003 and again in 2009 using a different random sample of people in 2009 than in 2003 and asked them to choose the most important problem facing the country today from the following​ choices, war,​ economy, health​ care, or other. Which of the following is the correct test to use to determine if the distribution of​ "problem facing this country​today" is different between the two different​ years?
A.

Use a​ chi-square test of homogeneity.

B.

Use a paired​ t-test.

C.

Use a​ two-sample z-test for proportions.

D.

Use a​ chi-square goodness-of-fit test.
Mathematics
1 answer:
Nuetrik [128]3 years ago
8 0

Answer:

Step-by-step explanation:

From the information given, the population is divided into sub groups. Each group would consist of citizens picking a particular choice as the most important problem facing the country. The choices are the different categories. In this case, the null hypothesis would state that the distribution of proportions for all categories is the same in each population. The alternative hypothesis would state that the distributions is different. Therefore, the correct test to use to determine if the distribution of​ "problem facing this country ​today" is different between the two different​ years is

A) Use a​ chi-square test of homogeneity.

You might be interested in
If u respond in 5 minutes, I will mark u brainly. HURRY!
damaskus [11]

Answer:

A. -1/2

Step-by-step explanation:

(2x+2)^2 - 3(4/3x)=3

x=-1/2

8 0
3 years ago
Change this improper fraction into a mixed number: 89/9
enyata [817]
1) 11 1/8

2) 5/7

3)it would be 233/3 but since that isn't your option try going with 23/3

4) 10 / 16

5) 9/3 = 3 (aka 3/1 ) then 3/9 = 0.3.
Answer for number 5 ⬇
Therefore 9/3 would be your greatest
~the fractions doesn't equal each other~{meaning that the equal sign wouldn't be your answer} ~
~3/9 Would be lesser than 9/3~
~just make the fraction into division .it might help ~
~~~~~~~~~~~~~`~~~~~~~~~~~~~~~~~~~~~~~~~~~
For improper fraction just multiply and add
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Looking for the equivalent of the fractions... try dividing as well
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Example of a improper fraction

Problem : 12 3/5

Work: 12(5) = 60
60 +( 3 )= 63
Answer : 63/ 5
(note: don't worry about the example .... its not apart of the questions you asked.. but you can if you want to ... don't get me wrong.. if it was helpful you can use it )

☺
8 0
3 years ago
Read 2 more answers
Students are selling magnets. One magnet is $0.20, two magnets is $0.38, three magnets is $0.56, and four magnets is $0.74. If t
satela [25.4K]

Answer:

The cost of six magnets is $1.10

Step-by-step explanation:

The cost of 1 magnet  =  $ 0.20

Cost of 2 Magnets = $ 0.38

Now, the series of the cost of magnets is:

0.20 , 0.38, 0.56 , 0.74,...

Now, the above series forms an Arithmetic Progression as

0. 38  - 0. 20 = 0.18

and 0. 56  - 0. 38  =  0.18

Hence, the common difference of the series = 0.18

and first term of the series = 0.20

By , A.P  a(n) = a + (n-1) d

⇒a_6 = 0.20 + (6-1)(0.18)  \implies  a_6 = 0.20 + 5(0.18)

or, a(6) = 0.20  + 0.9 = 1.1

or,  the sixth term in the sequence is $1.1

Hence, the cost of six magnets is $1.1

3 0
4 years ago
Which equation represent a line parralel to y=4x+1 and passes through (1,7)?
Alecsey [184]

Answer:

y=4x+3

Step-by-step explanation:

3 plus 4 is 7, 0 plus 1 is 1, so yeah, same slope and y-intercept is in a spot so the next point on the line is (1,7)

6 0
3 years ago
Read 2 more answers
A restaurant averages ales of $120,000 when serving 20,000 guests. The restaurant's variable costs when 20,000 is $90,000. The c
Katarina [22]

Answer: Restaurant's monthly breakeven point in sales is $31333.

Step-by-step explanation:

Since we have given that

Number of guests = 20,000

Average sales = $120,000

Contribution margin per guest = $1.50

Let the number of sales be 'x'.

Cost per sales would be

\dfrac{120000}{20000}\\\\=\$6

Margin contributed by 2000 guests would be

1.50\times 20000\\\\=\$3000

So, Revenue function would be

6x+3000

Fixed monthly cost = $ 50,000

Variable cost for 20000 guests = $90000

So, Variable cost per sale would be

\dfrac{90000}{20000}\\\\=\$4.5

So, Cost function would be

4.5x+50000

Breakeven point would be

Cost function = Revenue function

6x+3000=4.5x+50000\\\\6x-4.5x=50000-3000\\\\1.5x=47000\\\\x=\dfrac{47000}{1.5}\\\\x=\$31333.33\\\\x=\$31333

Hence, Restaurant's monthly breakeven point in sales is $31333.

3 0
4 years ago
Other questions:
  • A baker needs 4 3⁄4 cups of flour. if she uses a 1 1⁄2 cup measuring scoop, how many scoops of flour must the baker use to have
    6·1 answer
  • The lengths of a certain species of fish are approximately normally distributed with a given mean jl and standard deviation o.
    5·1 answer
  • Nevermind. I figured it out the problem out
    11·1 answer
  • Sara's savings account balance changed by $34 one week by -$67 the next week.which amount represents the greatest change?
    11·1 answer
  • Use the following scenario and data for questions 6 to 13: About 23.3% of the freshmen enrolled in a state university are first
    8·1 answer
  • A camera has a listed price of $808.95 before tax. If the sales tax rate is 6.25%, find the total cost of the camera with sales
    9·1 answer
  • a circle has a radius of 6 an arc in this circle has a central angle of 50 what is the length of the arc
    11·1 answer
  • Someone please help lols
    10·1 answer
  • El cuadrado del doble de la tercera parte de un numero es igual a 64 ¿cuál es el número?
    9·1 answer
  • Pls help i am stuck no links in the answer
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!