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A researcher hypothesizes that the effect of taking tylenol (IV1: 1 tylenol vs. 0 tylenol) on...

A researcher hypothesizes that the effect of taking tylenol (IV1: 1 tylenol vs. 0 tylenol) on headache pain (DV) does not change as a function of time of day (IV2: morning vs. afternoon). Which experimental outcome would not provide evidence in support of this hypothesis?

a. A main effect of tylenol

b. A main effect of time of day

c. An interaction between time of day and tylenol

d. A main effect of time of day, and a main effect of tylenol
math   Statistics-And-Probability   
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Answer #1

as hypothesis is for no interaction therefore option C is correct

c. An interaction between time of day and tylenol

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