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

Question

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

Quizplus · Accepted Answer

This statement is true. The difference between two sample means is often used as an estimator for the difference between two population means. This is based on the principle of the central limit theorem, which states that the distribution of sample means tends to be normal, regardless of the original distribution of the population. Therefore, the difference between two sample means can provide a good estimate of the difference between two population means, as long as the samples are representative and large enough.

The Best Estimator of the Difference Between Two Population Means