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 95% confidence intervals for Dr.Johnson's study?
A) 5.78 to 15.72
B) 5.99 to 15.52
C) 6.78 to 17.78
D) None of these
Correct Answer:
Verified
Correct Answer:
Verified
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