.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 task for which the regular population averages = 400 msec. The distribution of reaction times is approximately normal with = 40. Assume that the researcher obtained a sample mean ofM =422 for then =25 participants in the study.

b) Do the data provide evidence that the alcohol significantly increased (slowed) reaction time?