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
d1i1m1o1n [39]
3 years ago
12

By visiting homes door-to-door, a municipality surveys all the households in 31 randomly-selected neighborhoods to see how resid

ents feel about a proposed property tax increase. Identify the type of sample that is being used.
1. Stratified sample
2. Cluster sample
3. Voluntary response sample
4. Sample of convenience
Mathematics
1 answer:
monitta3 years ago
6 0

Answer:

Cluster Sample

Step-by-step explanation:

Sometimes, a survey may involve people in a widespread geographical location. Taking samples from all part of the location may involve higher cost and even difficulty in accessing the whole area. Researchers therefore use a type of sampling method that help in overcoming this difficulty and still get results that can be used to judge the whole population.

This type of sampling is called cluster sampling. Cluster sampling involves sharing your population into clusters and randomly selecting two or more of the clusters. The researcher then samples from only the selected clusters.

In the question above, the population is already shared into clusters, in the form of neighbourhoods. The municipality then randomly selected 31 neighbourhoods out of the whole neighbourhoods in the city, just like in cluster sampling, then samples from only the selected neighbourhood. This is why the selected samples are cluster samples.

You might be interested in
42 points giv away PLZ ANSWER RN (5/8+3/4) divided by (-2/3 - 5/6)
Triss [41]

Answer:

when you divide you get -11/12

if you have a calculator you could add the 5/8 and 3/4

then add the -2/3 and the -5/6

then divide the first answer by the second answer

8 0
3 years ago
Read 2 more answers
Bob makes three different silverware - spoons, forks and knives. Each unit (dozen) of spoon gives him a profit of $9, forks of $
Gala2k [10]

Answer:

Solution is:

z  (max) = 687.5

x₁   =  0

x₂   = 16

x₃   = 21

Step-by-step explanation:

From the problem statement we have:

Resources:      machine time ( 183 h)      labor (250  h)   steel  185 (pounds)

Unit

Spoons                          4                                     4                          3

forks                               4                                     9                          2

knives5                          5                                     5                          4

Profit $                           9                                    20                       17.5

Objective function z =  9*x₁  +  20*x₂  + 17.5 *x₃   to maximize

Subject to:

Availability of machine time  :  183 h

4*x₁  +  4*x₂ +   5*x₃ ≤  183

Availability of labor  :  250 h

4*x₁  +  9*x₂  +  5*x₃  ≤  250

Availability of steel  :  185 pounds

3*x₁  +  2*x₂  +  4*x₃  ≤  185

Requirement:

x₂ ≥ 16

General constraints:

x₁  ≥ 0             x₃      ≥  0 all integers

After 6 iteration the solution using AtomZmath on-line solver

z  (max) = 687.5

x₁   =  0

x₂   = 16

x₃   = 21

Resources used:

Machine time: 16* 4 + 21*5  =  64  +  105  = 169

remains   183 - 169  = 14 h

Labor:  16*9  +  21* 5  =  144  +  105  =  249

remains   250 -  249  =  1 h

Steel :  16*2  +  21*4  =  32  + 84  =  116

remains   185  -  116  = 69 pounds.

If it is decided that 20 units of forks are to be made then

we will need   4*4 = 16   h of machine time

                         9*4 =  36 h  of labor

                         2*4 = 8 pounds of steel

We can get that from abandom to make one unit of x₃ ??

No because as we said we need 36 hours  of  labor ( we still have 1 we need 35 more hours ) if we make 20 x₃ insted of 21 we get only 5 hours.

z we got is maximum

5 0
3 years ago
a culture started with 2000 bacteria. after 4 hours it grew to 2200. predict how many bacteria will be present after 9 hours. ro
Sati [7]
First you will divide;
200÷4=50
Then you multiply;
50×9=450
Last you add;
2000+450=2450

4 0
3 years ago
Read 2 more answers
If f(x) = 3x^2 - 4 and g(x) = x+2, find (f - g)(x).
galina1969 [7]

Answer:

3x^2-x-6

Step-by-step explanation:

f(x) = 3x^2 - 4

g(x) = x+2

(f - g)(x)= 3x^2 - 4-( x+2)

Distribute the minus sign

(f - g)(x)= 3x^2 - 4- x-2

Combine like terms

            = 3x^2-x-6

8 0
3 years ago
Read 2 more answers
The picture below shows a pole and its shadow:
Artist 52 [7]
Choice D
364 centimeters
3 0
3 years ago
Read 2 more answers
Other questions:
  • Rochy deposited $400 in her checking account. She wrote a check for $400 to pay for her car note. Then , she made another deposi
    8·2 answers
  • Find the value of x such that the data set has a mean of 107. <br> 100,123,106,115,108,X <br> X=
    15·2 answers
  • A soda shop owner told his employee to add 2 cups and 1/5 of a cup to each gallon of soda. If there were 4 gallons of soda how m
    10·1 answer
  • Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0
    10·1 answer
  • Triangle ABC is translated to create triangle DFG, as shown below.
    14·1 answer
  • Solve the equation algebraically:<br> 10<br> 1<br> X= 7<br> I<br> I need an explanation too
    6·1 answer
  • Find the length of x in the truss shown below???
    10·1 answer
  • 5x-4y=-10 <br> -4x+5y=8<br> (Khan academy)
    6·1 answer
  • What is the volume of this triangular prism?
    5·1 answer
  • What is the common difference of the arithmetic sequence graphed below?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!