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The best estimator of the difference between two population means is the difference between two sample means
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Vigorous Exercise
Physical activity that is intense enough to significantly increase heart rate and respiration.
Scientific Fraud
Unethical conduct within scientific research, including fabrication, falsification, or plagiarism of data.
Replication
Repeating a research study to determine whether the results can be duplicated.
External Validity
The extent to which the results of a study can be generalized to other situations, populations, or settings beyond the study itself.
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