what is the time period for stimulants what test is performed to test the hypothesis that stimulants have a significant difference? how do you compare stimulant and control what is the stimulant time point how to measure stimulant levels how can we compare stimulants stimulants that are normally distributed how can i test their effect do stimulants show a higher stimulus? how to determine if stimulant is higher than a control how do you test the difference between stimulants and time points? how to compare stimulant levels stimulants with time points how do you measure stimulation for each stimulant how to compare stimulus levels between stimulants how to compare stimulant levels how do I test stimulation levels how many stimulant levels in stimulation data how can i measure stimulant levels how do i measure the stimulation levels in three stimulants and a control how to test the difference between stimulants