A researcher is testing the effect of a new cold and flu
treatment on participants’ reaction times. A sample of n=9
participants is obtained and each participant is given the normal
dose of the medicine. Thirty minutes later, each participant’s
reaction time is measured (in milliseconds). The scores for the
sample averaged M = 213 msec, with SS = 1160. Assuming that
reaction time for participants in the regular population averages
200 msec, are these data sufficient to conclude that the medication
has a significant effect on reaction time? Note: Use a two-tailed
test with alpha = 0.05. Identify the test you are using, and be
sure to report your sample statistic, the appropriate cutoff, and
explain your decision.
