The best estimator of the difference between two population means is the difference between two sample means .

Name: The best estimator of the difference between two population means is the difference between two sample means .
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Question

The best estimator of the difference between two population means  is the difference between two sample means  .

Quizplus · Accepted Answer

The formula for the difference between two population means involves unknown population parameters, whereas the formula for the difference between two sample means involves known sample statistics. Therefore, the latter is a better estimator.

The Best Estimator of the Difference Between Two Population Means