1. A t-test would be of help in comparing the two different groups' blood pressure average before and after being subjected to the drug. The difference will be meaningful and real if:
The responses are constantly close enough to the average value with a low standard deviation from the mean value.
The differences between the averages are large.
The t test effect size and the t test statistical significance are the two primary outputs of the t test. Statistical significance helps indicate whether the difference existing between sample averages represents actual differences between my populations (my two group ...