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Which type of caffiene promotes the best calorie burning?

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120 freuqent gym goers between the ages of 20 to 50.

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Coffee ended up promoting the most calories lost. Coffee sales went up 20% after the conclusion of this expiriement. After reporting back to the subjects months later, we found out some were unhappy about their change in diet due to the experiment, and wanted more money. Some people changed their diet for the better, and ended up drinking more coffee before working out.

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Coffee: $324.00
Soda: $46.80
Caffiene free soda: $46.80
Unit's pay: $20 per day (for 3 days)
Gym rent: $500 per day (for 3 days)
Total cost: $9,117.60

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This expiriment is not something that could be randomized, making it statistically significant.

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This chart shows the effect each treatment had on these rendomly selected subjects. It also shows the averages of each treatment.

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We would do the same things with different people of the same age group and same gym activity. This will allow us to see if our data strengthens, and possible build confidence on the data.

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Our sample size is 120 people, with a margin of error at 9.1%. Our margin of error could be better, but it means that the calories burned could go either way 9.1%. This leaves a range of 18.2%.

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Every particapnt will try expirience each treatment, to lessen the chance of lurking variables.

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Our study is partially blind. The subject can obviously tell the difference bewteen coffee, and soda. But until they get through all of the treatments, they won't know what the other subjects are taking.

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The caffeine free coke acts as our placebo because the can willl have covers on them, so the subject aren't aware of whether it is cafiene free, or not.

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Some lurking variable could be, the subjects diet, their age, and their weight. We will randomize the people is each group.

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The amount of calories the subject burns after a 45 minute session on a treadmill.

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The type of caffiene the subject recieves.

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We are going to give each subject 12 ounces of either the coffe, coke, or caffiene free coke.