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 Dr.Johnson's critical t-value?
A)1.860
B)2.306
C)1.943
D)1.895

Question

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 Dr.Johnson's critical t-value?
A)1.860 
B)2.306 
C)1.943 
D)1.895

Quizplus · Accepted Answer

The Answer of 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 Dr.Johnson's critical t-value?
A)1.860 
B)2.306 
C)1.943 
D)1.895

DrJohnson Is Studying the Effects of Aspirin on Heart Rate