Question: A researcher is interested in testing whether a new sedative-hypnotic drug called Zolexify reduces the degree of motor impairment experienced by patients. The researcher knows that the current leading competitor in the marketplace is lorazepam and she decides to recruit participants from the local area in order to compare the associated drug effects. She has recruited groups of participants and has assigned them to low, medium, or high dose conditions so that reaction time effects can be observed over a 24 hour period. The data that she acquired is below (this is fictional of course!):

For the following, assume ɑ=.05. Show all work! Report all test results using conventions discussed in class. No need to go through all steps of hypothesis testing if you decide to run any post-hoc tests (as well, do not use Tukey’s HSD!).

Test the hypothesis that the different doses of Zolexify will affect reaction times. You will need to figure out what statistics to use as well as what data should be analyzed from what was provided. You will also need to determine where significant mean differences occur (if indeed any are detected). Think very carefully about the information provided! Is this a within or between group design? What would make more sense given the research context? /10

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