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Serga [27]
2 years ago
13

In which type of statistical study is the population influenced by researchers? A. experiment B. Researchers do not influence th

e population in any of the statistical studies. C. observational study D. survey
Mathematics
1 answer:
Cloud [144]2 years ago
3 0

Using statistical concepts, it is found that the study in which the population is influenced by researchers is given by:

A. experiment.

<h3>What is the difference between and experimental and an observational study?</h3>

  • Experimental study: In an experimental study, there is an intervention in a sample, and it's effect is studied.
  • Observational study: In an observational study, the sample is just analyzed, without any intervention.

Influence is an intervention, hence option A is correct.

More can be learned about experimental and observational studies at brainly.com/question/24321224

#SPJ1

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A prism has height x +1 and base area x^4-x^3+3x^2-3x+3. The function that represents the prism's volume is?
tia_tia [17]

Answer: even

Step-by-step explanation:

5 0
3 years ago
Different parts of the circulatory system are adapted for different functions. A blood vessel that is very narrow and has thin w
ivann1987 [24]

Answer: I believe the answer is O passing materials in blood to cells

Step-by-step explanation:

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More info: Capillaries

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7 0
3 years ago
A class has 6 boys and 15 girls. What is the ratio of boys to girls
Gnoma [55]
the \ ratio \ is :  \\ \\ boys \ to \ girls = 6:15= 2:5
4 0
3 years ago
Read 2 more answers
What will be the value of median of a moderately asymmetrical distribution? If the mean and mode are 30 and 24 respectively.
sineoko [7]

The mean, the median and the mode are measures of central tendency, and they are related in some many ways, depending on the type of distribution.

The median of the moderately asymmetrical distribution is 26

The given parameters are:

Mean = 30

Mode = 24

For a moderately asymmetrical distribution, the mean, median and mode are related by the following equation:

Mode = 3 * Median - 2 * Mean

Substitute known values

30= 3 * Median - 2 * 24

30= 3 * Median - 48

Collect like terms

3 * Median =30+ 48

3 * Median =78

Divide both sides by 3

Median =26

Read more at:

brainly.com/question/15669207

7 0
3 years ago
Solve the following system using the substitution, elimination, or graphing method for the x coordinate:
igomit [66]
Hey there!

To solve this system of equations, you will need to get one of the terms in both equations to cancel out to zero. If there isn't a term that you can cancel out, you can multiply either or both equations to make that term. There's no wrong way to do this, just as long as you make sure that you double check whether your should add or subtract. This is easier shown than explained, so refer below:

<span>  x + y = +1
5x + y = –6

</span>–1(x + y = +1)
   5x + y = –6

–x – y = –1
5x + y = –6

You can see that once we combine these equations by adding, the y term will become 0, eliminating it. This is necessary for solving the system, so make sure you do it. Also, remember to distribute the term that you need to to all of the numbers in the equation! After that, just solve for the variable that's still in the equation. 

   –x – y = –1
+ 5x + y = –6

4x + 0y = –7
4x = –7
x = –1.75

Now, just plug the value we found for x into either one of your equations in the original system as it's presented in your problem. 

x + y = 1
–1.75 + y = 1
+1.75        +1.75

y = 2.75

All that's left to do is check your point (–1.75, 2.75). If it's true for both equations, your answer is correct!

–1.75 + 2.75 = 1
<span>5(–1.75) + 2.75 = –6

</span>(–1.75, 2.75) is the solution to your system. 

Hope this helped you out! :-)
3 0
3 years ago
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