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With a sample size of 50 people, our margin of error is 14.1%. This is not a big number but it could be smaller to avoid a base sample. We could survey more people to decrease our margin of error.

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We randomly composed a list of 50 high school students and observed whether they are more aware and focused in the morning or not. Potential lurking variables are the amount of sleep, when they go to bed, when they wake up, and what they are doing in the morning.

Matched pair design
We matched people up by the hour they go to sleep and how many hours they slept and gave one group coffee and one group water. This will help us get a better representation of the data and the outcomes.

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We are able to blind our subjects in the sense that the students do not know who has coffee or water. The testing environment is slient so there's no chance of them talking and saying what drink they got. However there is no way to blind the subjects in a way they don't know what they are drinking because water and coffee taste very different.

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Our results were posted in local newspapers so people can know the advantages to drinking coffee.

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We will found 50 new students from a new school to experiment on to confirm our results/data.

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At the end of the testing period we graded the tests and the students with the higher tests scores on average were the students who drank coffee, with an average grade of 82.6% overall while the control group averaged test scores of 75.2

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Our control group is the 25 students who do not receive the coffee but receive water, a placebo is not possibly for our experiment

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When all the students were done taking the test we graded them and reviewed the scores.

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Our explanatory varible was what treatment the students would be given, either water or coffee.

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We went to local highschools  and talked to the administrators if doing our experiment on 50 students during a morning period would be okay. Once we found a school the day before the experiment was going to be taken place we went into the classroom and informed the students on what would be happening and instructed none of them to drink anything in the morning except water.

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We found 50 men and women in a highschool classroom.

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25 people were randomly assigned a cup of coffee before taking a test the other 25 were assigned a cup of water.

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Does coffee make you  more alert aware and focused?