answer.
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
horrorfan [7]
2 years ago
4

To estimate the percentage of households in Connecticut which use fuel oil as a heating source, a researcher collects informatio

n from 1000 Connecticut households about what fuel is their heating source. State the individual, variable, population, sample, parameter, and statistic:Question 1 options:1. Households in Connecticut2. percentage of households in Connecticut who use fuel oil as heating source3. set of all responses of Connecticut households as to heating source4. set of 1000 responses of Connecticut households as to heating source5. percentage of those who use fuel oil as heating source calculated from the population of Connecticut households6. percentage of those who use fuel oil as heating source calculated from the sample of 1000 Connecticut households
Mathematics
2 answers:
Crank2 years ago
8 0

Answer:

An individual in this study is: Each household established in the Connecticut area (1. Households in Connecticut)

.

The variable of interest in this study is: Use of fuel oil in Connecticut homes as a heating source (3. set of all responses of Connecticut households as to heating source).

The population in this study is given by: All households that are in the perimeter of Connecticut (2. percentage of households in Connecticut who use fuel oil as heating source).

The sample in this study is given by: The set of 1000 households that were part of the survey on the use of fuel oil as a source of heating in Connecticut (4. set of 1000 responses of Connecticut households as to heating source).

The parameter of interest in this study is: The proportions of households that use fuel oil as a source of heating in Connecticut. (5. percentage of those who use fuel oil as heating source calculated from the population of Connecticut households).

The statistic of interest in this study is: The proportions of households that use fuel oil as a heating source among the 1000 households that participated (6. percentage of those who use fuel oil as heating source calculated from the sample of 1000 Connecticut households).

Step-by-step explanation:

Doss [256]2 years ago
4 0

Answer:

Total no of samples=1000

Total no of households=6

Pr(to pick a household from the sample)=6/1000=0.0006

You might be interested in
jack puts 1/3 pound of birdseed into his feeder every time he fills it. how many can jack fill his bird feeder with 4 pounds of
Flura [38]

Answer: Jack can fill his feeder 12 times with 4 pounds of birdseed.

Step-by-step explanation:

You need to analize the information given in the exercise, You know that every time Jack fills the feeder, he put \frac{1}{3} pounds into it.

Then, in order to solve this exercise, let "x" represents the number of times that Jack can fill his  feeder with 4 pounds of birdseed.

Keeping on mind the data provided in the exercise, you can set up de following proportion:

\frac{1}{\frac{1}{3}} = \frac{x}{4}

Finally, you must solve for "x" in order to find its value.

You get that this  is:

3= \frac{x}{4}\\\\(3)(4)=x\\\\x=12

Therefore, you can conclude that Jack can fill his feeder 12 times with 4 pounds of birdseed.

4 0
2 years ago
A political polling agency wants to take a random sample of registered voters and ask whether or not they will vote for a certai
bonufazy [111]

Answer:

C. Different sample proportions would result each time, but for either sample size, they would be centered (have their mean) at the true population proportion.

Step-by-step explanation:

From the given information;

A political polling agency wants to take a random sample of registered voters and ask whether or not they will vote for a certain candidate.

A random sample is usually an outcome of any experiment that cannot be predicted before the result.

SO;

One plan is to select 400 voters, another plan is to select 1,600 voters

If the study were conducted repeatedly (selecting different samples of people each time);

Different sample proportions would result each time, but for either sample size, they would be centered (have their mean) at the true population proportion.  This is because a sample proportion deals with random experiments that cannot be predicted in advance and they  are  quite known to be centered about the population proportion.

5 0
2 years ago
I ordered some books online for myself and friends. ​Each book costs \$ 13$13 and the store charges a flat rate for shipping of
Sonbull [250]

Answer: 13n + 20

Step-by-step explanation:

The cost of each book is $13. That means that if you end up buying "n" books, cost would be:

= Cost of each book * number of books

= 13 * n

= 13n

You would also get charged a flat rate for shipping of $20 which would be added to the above cost to bring a total of:

= 13n + 20

8 0
2 years ago
Louise completed the work shown below. (5x3 + 3)2 = (5x3)2 + (3)2 = 25x6 + 9 Determine if Louise’s answer is correct. Explain
Sergeu [11.5K]

Louise’s answer is not correct. She is missing the term 30x3. When squaring a binomial, it is best to write the product of the binomial times itself. Then you can use the distributive property to multiply each term in the first binomial by each term in the second binomial. Louise also could have used the formula for a perfect square trinomial, which is found by squaring a binomial.

10 0
2 years ago
Read 2 more answers
Suppose T is the transformation from ℝ2 to ℝ2 that results from a reflection over the y-axis followed by a reflection over the x
LenKa [72]

<u>Answer:</u>

A = \begin{pmatrix}-1 & 0 \\0 & -1\end{pmatrix}

<u>Step-by-step explanation:</u>

Let, there be a point (x , y) in R2

After reflection on Y axis, it will be ( -x , y) and thereafter if we reflect the image over X -axis , it will be (-x , -y)

So,

we need to find out a matrix

[tex]\begin{pmatrix}a & b \\c & d\end{pmatrix}[tex]

such that,

(x , y) [tex]\begin{pmatrix}a & b \\c & d\end{pmatrix}[tex] = (-x. -y)

So, we  have the following set of equations.

ax + cy = -x ------------(1)

bx + dy= -y-----------(2)

We can get the solution (by inspection) as,

[tex]\begin{pmatrix}a & b \\c & d\end{pmatrix}[tex]

= [tex]\begin{pmatrix}-1 & 0 \\0 & -1\end{pmatrix}[tex]

So, the matrix is,

A = \begin{pmatrix}-1 & 0 \\0 & -1\end{pmatrix} (answer)

8 0
2 years ago
Other questions:
  • If a box of clothes weighing 10 lbs (4.5 kg) and a box of books weighing 10 lbs (4.5 kg) were placed on a scale, what is most li
    7·2 answers
  • Jeremy has two pieces of what one is 90 inches and the other is 72 inches he want to cut the pieces of wood in the smaller piece
    12·1 answer
  • Why would someone choose to use a graphing calculator to solve a system of linear equations instead of graphing by hand? Explain
    10·2 answers
  • Which polynomial function could be represented by the graph below?
    9·2 answers
  • When Ryan was born, he weighed 7 pounds.At 6 months, he weighed 11.2 pounds. Amanda weighed 6 pounds when she was born, and 12.9
    6·2 answers
  • Erin has 5 tops, 6 skirts and 4 caps
    15·2 answers
  • The factor tree for 3,025 is shown. A factor tree starts with 3,025 at the top. 3,025 branches down to 5 on the left and 605 to
    6·1 answer
  • The table shows the number of trees at Citrus Orchards. What
    10·1 answer
  • Sam bought 3 boxes of chocolate online. Postage was $9 and the total cost was $45. How much was each box?
    12·2 answers
  • 2. Which of the following relations is/are function/s?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!