An example of a(n) double-blind research study would be where an experiment was conducted on caffeine-induced stress when neither the class researchers nor the test subjects knew who received caffeine and who did not until after the study was finished.
<h3>What is double-blind research study?</h3>
- A double-blind study is one in which neither the participants nor the researchers are aware of which group is getting the treatment.
- However, it also prohibits researchers from unintentionally disclosing information about the experiment.
- This type of study is particularly helpful in avoiding biased reports that are likely the result of placebo effects.
- Imagine, for instance, that researchers are looking into the effects of a novel medication.
- The participants in a double-blind study would not be aware of who was receiving the real medication and who was receiving a placebo, and neither would the researchers who contact with them.
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Not much is known about how the earliest civilizations adapted to their environments except through their cultural habits (i.e. religion, games, etc). The Mayans took advantage of the surrounding rain forests and developed a very heavy agricultural and farming civilization, focusing in the cultivation of maize, beans, squash, peppers, avocado, and other important foods. They created a system for tearing down the rain forest in order to make room for their fields and left the watering of the plants up to the gods as they believed that the sun and rain were entirely divine. The Aztecs, however, settled in a more marshy land that was difficult to cultivate. Instead, they relied on military power and strength to conquer other civilizations and steal their food to keep their civilization alive. They did a bit of growing on their own, but not to the same scale as the Mayans, developing water ways and canals to transport goods from conquered cities to their capital.
I guess it depends on the type of dog; larger dogs tend to live shorter than smaller ones. A statistical average would be between 10-13 years.
The political perception on all people is that they perceive the mediators and the media as always biased against their position.
<h3>What is a
political perception?</h3>
A political perception refers to the public perception towards the politicians and the media who work for them
In conclusion, the political perception on all people is that they perceive the mediators and the media as always biased against their position.
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<u>Answer:
</u>
By observing the graph, it can be said that the first half of the graph illustrates a progressive tax.
<u>Explanation:
</u>
- The tax in the first half of the graph ranges from the lowest 20% to the fourth 20%.
- In this range, it can be seen that for every income group, the total effective tax rate has increased considerably at every new stage.
- The tax rate has increased by approximately 3 to 4 percent every time.
