Multiple Choice
Dr.Johnson is studying the effects of aspirin on heart rate.He believes that aspirin will lower heart rate.He has 2 groups the treatment group receives 80mg of aspirin for a week (n=4) the control group received a placebo (n=4) and their heart rates are compared.Below is his data in which heart rate is beats per minute.He sets his alpha level at 0.05 and uses a directional test. 
What is the t-value for the data above?
A) 4.20
B) 4.19
C) 3.91
D) None of these
Correct Answer:
Verified
Correct Answer:
Verified
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