In a study examining the effects 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,reasearchers measured reactio 30 minutes after participants consumed one 6- ounce glass of wine.Again, they used a standardized simulation task for which the regular population averages of population= 4000msec. The distributions of reactions times is approximately normal with deriavance=40. Assume that the researcher obtained a sample mean of M=422 for the n= 25 participants in the study. A) are the data sufficient to conclude that alcohol has a significant effect on reaction time? Use a two tailed test with a=.01 B) Do the data provide evidence that the alcohol significantly increased reaction time? C) Compare Cohen's d to estimatethe size of the effect
In a study examining the effects 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,reasearchers measured reactio 30 minutes after participants consumed one 6- ounce glass of wine.Again, they used a standardized simulation task for which the regular population averages of population= 4000msec. The distributions of reactions times is approximately normal with deriavance=40. Assume that the researcher obtained a sample
A) are the data sufficient to conclude that alcohol has a significant effect on reaction time? Use a two tailed test with a=.01
B) Do the data provide evidence that the alcohol significantly increased reaction time?
C) Compare Cohen's d to estimatethe size of the effect
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