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8 December, 05:04

An experimenter wants to study the relationship between caffeine and reaction time. She assigns participants as follows: Group One receives 50 milligrams of caffeine; Group Two receives 100 milligrams of caffeine; Group Three receives 200 milligrams of caffeine; Group Four receives no caffeine. Twenty minutes later, all participants complete the reaction-time test. In this experiment, what was the dependent variable?

a. Amount of caffeine

b. No caffeine

c. Reaction time

d. Assignment into one of four groups

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  1. 8 December, 05:25
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    Answer: Reaction time

    Explanation: the reaction time as the dependent variable seek to measure the amount of time it will take for the different amount of caffeine consumed to has it effect. It is dependent on the independent variable caffeine
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