What is the Sample Mean Difference
A research team is interested in investigating the effectiveness of a new medication intended to reduce resting heart rate (beats per minute, BPM) in overweight patients. In order to test the medication, the researcher organizes a clinical trial with participants randomly assigned to receive either the new medication or a placebo. Suppose the following table represents the heart rates for a SRS from both groups.
Data for the placebo group are {71, 71, 68, 67, 68, 69, 70, 70, 69, 72, 73}
Data for the treatment group are {67, 66, 64, 64, 65, 64, 59, 63, 71, 64}
Sample standard deviation for the placebo group is: 1.834
Sample standard deviation for the treatment group is: 3.057
What is the Sample Mean Difference? (alpha=0.05)
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