Caffeine intake affects reaction time of humans and improves response of the brain to external stimuli.
The question on this paper is does the increase of caffeine increases the reaction time ? the Null hypotheses is the type or the brand of the coffee used wont change the results of the reaction time only the mass of the coffee will change the reaction time. My variables are the time and the coffee mass . excel sheet: sheet1/ all the data collected with the graph and best line fit, and the other graph proves there is a proportional relationship between the coffee mass and the final reaction time the increase of the coffee amount decreases the final reaction time graph “coffee mass Vs final reaction time”
