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almond37 [142]
2 years ago
5

2 divided by square root 13 plus square root 11

Mathematics
1 answer:
coldgirl [10]2 years ago
4 0

Answer: 3.87132498658 in other words 3.871

Step-by-step explanation:

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Step-by-step explanation:

Hello!

An observational study is one where the investigator has no control or intervenes on it. He just defines the variable of interest and merely collects and documents the information. These types of studies are usually made as precursors to a more formal experimental study, to have an idea of what's to be expected from the population.

In this example, the researcher merely took the information of interest from the survey that was taken. The researcher did not intervene in any way in the experiment. Because of the lack of intervention from the researcher, it is not valid to use the conclusions of this experiment to generalize to all American adults. For instance, it is not sure that the sample is representative, all people responding to the survey may be healthy or have certain eating habits. This also shows that many confusing factors are not taken into account like:

-eating habits (from eating healthy to extreme cases like being vegetarian/vegan or eating only fast food)

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-before health issues, there can be other health conditions that may be affecting the interviewees.

I hope it helps!

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