The Best Way to Determine Whether a Statistically Significant Difference

Multiple Choice

The best way to determine whether a statistically significant difference in two means is of practical importance is to

A) find a 95% confidence interval and notice the magnitude of the difference.
B) repeat the study with the same sample size and see if the difference is statistically significant again.
C) see if the p-value is extremely small.
D) see if the p-value is extremely large.