In a study examining the effect of alcohol on reaction time, liguori and robinson (2001) found that even moderate alcohol consumption significantly slowed response time to an emergency situation in a driving simulation. in a similar study, researchers measured reaction time 30 minutes after participants consumed one 6-ounce glass of wine. again, they used a standardized driving simulation tasks for which the regular population averages μ = 400 msec. the distribution of reaction times is approximately normal with σ = 40. assume that the researchers obtained a sample mean of m = 422 for the 25 participants in the study. did alcohol consumption have an effect on reaction time? test with α = .05