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
Vilka [71]
3 years ago
8

A researcher wants to survey people from different age groups to analyze voting patterns. Which type of survey will best accompl

ish this goal?
systematic random sampling
voluntary sampling
convenience sampling
stratified sampling
Mathematics
2 answers:
nordsb [41]3 years ago
6 0

Answer: Stratified sampling


Step-by-step explanation:

Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.

Given: A researcher wants to survey people from different age groups to analyze voting patterns.

Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.

Thus, Stratified sampling best accomplish this goal.


tiny-mole [99]3 years ago
4 0

This is an example of stratified sampling because here the samples are divided into different age groups. A stratified sampling is a better way of sampling as it provides a greater precision of results out of a small sample size. This method is also economic as it operates on less samples.

Hence, stratified sampling is the correct answer.

You might be interested in
approximately 9 out of 10 smokers began smoking before the age of 21. In a group of 400 smokers, about how many of them started
Slav-nsk [51]
Greetings!

You can create an equation to solve for x:
9/10=x/400
Cross Multiply.
9*400=10*x
3600=10x
Divide both sides by 10.
(3600)/10=(10x)/10
The Answer Is:
360=x


Out the 400 smokers, approximately 360 of them started smoking before age 21.

Hope this helps.
-Benjamin
3 0
4 years ago
Read 2 more answers
P=3.25x - x2/40,000 - 3000. find the product on level that produces a maximum profit
umka21 [38]

Answer:

I am a little bit more about it. the only one who has a great time to time, and I am a very good at the same time, and I will be a good person to person. I am a little while, but it will not have a

Step-by-step explanation:

great day for me to do it, but I think 2 the. follow the instructions for a couple of days. the the the the the other side of things to say, but I think I am going through my head. it will not be able to get the most of the most part, and

4 0
3 years ago
PLEASE ANSWER FAST I'M BEING TIMED!
laila [671]

Answer:

the height, the formula for violume of a cylinder is pi * r^2 * h

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Reasoning Graph the set of ordered pairs (0, 2). (1.4), (2,6). (3.8). Determine whether the relationship is a linear function Ex
polet [3.4K]

Answer:

No, it does not. See below.

Step-by-step explanation:

Lets find out the linear equation that passes trough (-2, 0) and (0, -6).

We know every linear equation has the form: y = mx + b

Where m is the slope on the curve and b the independent term.

We know that, given 2 points (x1,y1) and (x2,y2) we can find the slope m as:

m = (y2-y1)/(x2-x1)

In our case lets replace (x1,y1) and (x2,y2) by (-2, 0) and (0, -6) (notice it could be done in the inverse sense where (-2, 0) is (x2,y2) and (0, -6) is (x1,y1) ). So, our slope is:

m = [-6 - 0] / [0 - (-2)]

m = -6/2 = -3

So, we have a downward linear function with slope -3, this is:

y =  -3x + b

Now, for finding b just replace any of the 2 points given in the equation. Lets replace (-2, 0):

0 = -3(-2) + b

0 = 6 + b

Subtracting 6 in both sides:

-6 = b

So, our independent term is -6 and the function is:

y = -3x - 6

Now lets see if this linear eqution passes trough (2,6). If it does, we can replace the values on the equation. Replacing x by 2:

y = -3(2) - 6 = = -6 - 6 = - 12

So, in our equation, we x is 2 y is -12, and not 6 as in the point (2,6). So, our equation does not passes trough (2,6)

5 0
3 years ago
6. (x + 2)(3x - 1) - (x + 4)(x - 7)<br> i’m confused
Lera25 [3.4K]

Answer:

\large\boxed{(x+2)(3x-1)-(x+4)(x-7)=2x^2+8x+26}

Step-by-step explanation:

(x+2)(3x-1)-(x+4)(x-7)\\\\\text{Use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x+2)(3x-1)=(x)(3x)+(x)(-1)+(2)(3x)+(2)(-1)\\\\=3x^2-x+6x-2=3x^2+(-x+6x)-2=3x^2+5x-2\\\\(x+4)(x-7)=(x)(x)+(x)(-7)+(4)(x)+(4)(-7)\\\\=x^2-7x+4x-28=x^2+(-7x+4x)-28=x^2-3x-28\\\\(x+2)(3x-1)-(x+4)(x-7)=(3x^2+5x-2)-(x^2-3x-28)\\\\=3x^2+5x-2-x^2-(-3x)-(-28)=3x^2+5x-2-x^2+3x+28\\\\=(3x^2-x^2)+(5x+3x)+(-2+28)\\\\=2x^2+8x+26

7 0
4 years ago
Read 2 more answers
Other questions:
  • Suppose the mean income of firms in the industry for a year is 95 million dollars with a standard deviation of 5 million dollars
    12·1 answer
  • A ratio comparing two quantities often measured in different units
    6·2 answers
  • (01.02 LC)Simplify negative 3 and 1 over 9 − negative 8 and 1 over 3.
    14·1 answer
  • What is the sum of the first 250 consecutive odd numbers
    6·2 answers
  • Description in the picture
    9·2 answers
  • Write an expression using Distributive Property that can be used to find the quotient 56 divided by 4
    14·1 answer
  • Today, January 4th is the start of a brand new quarter, your starting fresh! What is a math goal that you have for yourself for
    8·2 answers
  • The fitness center needs $125,000 in five years for more workout machines. Find the total interest earned if payments are made a
    10·1 answer
  • PLEASE HELP!!! ILL GIVE BRAINLIEST !! Which is the correct answer ?
    8·2 answers
  • PLEASE HELP ME ASAP!!!!!????
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!