Many over-the-counter cold medications come with a warning that the medicine may
ID: 3432536 • Letter: M
Question
Many over-the-counter cold medications come with a warning that the medicine may cause drowsiness. To evaluate this effect, a researcher initially measures reaction times for a sample of n = 36 participants. Each participant is then given a dose of a popular night-time cold medicine, and reaction time is measured again.
independent measures t-test
repeated measures t-test (i.e., dependent samples t-test)
F (ANOVA) for independent measures
F (ANOVA) for repeated measures (i.e., dependent measures ANOVA)
2-way F (2-way ANOVA).
independent measures t-test
repeated measures t-test (i.e., dependent samples t-test)
F (ANOVA) for independent measures
F (ANOVA) for repeated measures (i.e., dependent measures ANOVA)
2-way F (2-way ANOVA).
Explanation / Answer
Answer : repeated measures t-test (i.e., dependent samples t-test)
Because we test the same subjects twice
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