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
NemiM [27]
3 years ago
6

As part of a statistics project, Andrea would like to collect data on household size in her city. To do so, she asks each person

in her statistics class for the size of their household, and reports that her sample is a simple random sample. However, this is not a simple random sample. Which of the following are valid reasons for why this is not a sample that is appropriate for this research question Why?
Charlie did not use any randomization; he took a convenience sample.

Charlie did not use a random number table to randomize the order in which he collected the students' responses, so the sample cannot be random.

In this investigation of household size, each household represents a case. Charlie incorrectly sampled individuals instead of households.
Mathematics
1 answer:
strojnjashka [21]3 years ago
7 0

Answer:

Charlie did not use any randomization; he took a convenience sample.

Step-by-step explanation:

The first question we need ask is whether his classmates make up the population of the city? Or does it mean that his classmate will give unbiased representation of the entire city? Because we are certain there are many other schools within the city of interest. Less assume he can do that, what will happen to all other schools? These are many other factors rendered his choice of sampling inappropriate for this study.

Therefore, the process is not random but convenience sample, even though they might give information about their various household sizes, it might not give the true picture of the city he is trying to investigate.

The best approach should have been a probability sampling techniques, preferably a systematic random sampling approach. If he has followed this process of sample selection, it will give a more reliable and well representative sample to determine the households size in the city of his interest.

You might be interested in
Explain your answer !!<br><br> Have a great day <br><br> Will give brainlst
bekas [8.4K]
It is unevenly distributed with the soil because over the year and states it changes around the country.
5 0
3 years ago
Read 2 more answers
Which algebraic expressions are polynomials? Check all that apply.
olganol [36]

the options that are polynomials are:

3.9x³-4.1x² + 7.3

x²y²-4x³+12y

4-x²

<h3>Which algebraic expressions are polynomials?</h3>

A polynomial is an expression of the form:

p(x) = aₙ*xⁿ + ...+ a₂*x² + a₁*x  + a₀

Where all the exponents of the variable are whole numbers, and in this case we have only one variable x, but we could have any number of variables.

With that in mind, the options that are polynomials are:

3.9x³-4.1x² + 7.3

x²y²-4x³+12y

4-x²

These 3 expressions are polynomials.

If you want to learn more about polynomials:

brainly.com/question/4142886

#SPJ1

6 0
1 year ago
Check for understanding. <br><br> need help with all 3. PLS HELP
Dominik [7]

1. X=5

2. X=-5

3. Y=10

Step-by-step explanation:

those are the answers

8 0
3 years ago
He cross-sectional areas of a right pyramid and a right cylinder are congruent. The right pyramid has a height of 5 units, and t
AleksandrR [38]

Answer:

The volume of the pyramid is not equal to the volume of the cylinder.

Step-by-step explanation:

A right cylinder has the circular cross-sectional area and if the cross-sectional areas of a right pyramid and a right cylinder are the same then the pyramid must be a right circular cone.

Now, the volume of a right cylinder is πr²h and that of a right circular cone is 1/3 πr²h.

Therefore, the radius of the base of the cone and that of the cylinder is the same and their heights are equal to be 5 units, then the volume of the pyramid is not equal to the volume of the cylinder. (Answer)

5 0
3 years ago
14% of the town's population is over the age of 65. If there are 320 residents over the age of 65, approximately what is the tow
marshall27 [118]

Answer & Step-by-step explanation:

So if 14% are over 65, and 320 residents are over 65, then we can say that 14% of the town is 320. Then, we can divide by 14 to find 1%, which is 22.857142857 Now we can multiply this by 100 to get 2285.7142857, which is the answer. To double check, you'd just find 14% of 2285.7142857 (multiply by 0.14) which is equal to 320. Because you can't have fractions of people, however, you'd have to round the answer up to 2286 people.

If that is too difficult to understand them hope this is easier

14% of the towns population is 320. Let P denote the towns population.

14/100 * P =320

14P/100 = 320

14P = 32000

divide both sides by 14

P = 2285.71

the towns population is 2286

Hope this helps!

5 0
3 years ago
Other questions:
  • Victoria builds a dollhouse in the shape of a right prism, as show below
    15·1 answer
  • the sum of the digits of a certain two digits number is 7. reversing its digit increases by nine what is the number
    7·1 answer
  • What is the next number in the following Lucas sequence? 1, 3, 4, 7, 11... a. 18 c. 15 b. 13 d. 17  
    9·2 answers
  • I don’t know the answer
    10·1 answer
  • Which of the following is true about the graph of f(x)=7^x
    8·1 answer
  • Which of the following are prime polynomials? z-1 4z+20 6z-42 -7z+26
    8·2 answers
  • This equation shows how the amount of money Sadie makes from selling lemonade is related to the number of cups sold. d =3c
    14·1 answer
  • I remember being taught this but I can't remember how to solve it. Can you explain how to get the answer??
    9·2 answers
  • Find the value of x.
    12·1 answer
  • Can you solve this question? I would help a lot remember to explain it :)
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!