Twenty college students experience the effects of alcohol on reaction time.They perform very basic timed responses in a driving simulator both before and after consuming several alcoholic beverages.The researcher collects a reaction-time result for each of the 20 students before and after intoxication, for a total of 40 measures.What is the null hypothesis for this paired-samples study?
A) There is no difference in reaction time before and after consuming alcohol.
B) Reaction time slows with alcohol consumption.
C) There is a difference in reaction time before and after consuming alcohol.
D) Reaction time quickens with alcohol consumption.

Question

Quizplus · Accepted Answer

The null hypothesis for a paired-samples study is that there is no significant difference between the two sets of measurements. In this case, the null hypothesis is that there is no difference in reaction time before and after consuming alcohol.

Twenty College Students Experience the Effects of Alcohol on Reaction