A researcher wants to see if antihistamines will increase the amount of time in
ID: 3385095 • Letter: A
Question
A researcher wants to see if antihistamines will increase the amount of time in seconds it takes participants to react to a surprise stimulus. He first collects the participants' reaction times while not on antihistamines, and then gives them the dose of antihistamine. One hour later, he collects the participants' reaction times again.
Participant ID Reaction TimeBefore Antihistamine Reaction Time
After Antihistamine 1 1.37 1.45 2 2.45 2.90 3 1.95 2.01 4 3.01 3.25 5 .95 1.07 6 1.50 1.71 7 2.05 2.07 8 2.31 2.30 9 3.07 3.15 10 1.99 2.11 Mean 2.065 2.202 Standard Deviation .68 .72
Explanation / Answer
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