The best estimator of the difference between two population means $\mu _ { 1 } - \mu _ { 2 }$ is the difference between two sample means $\bar { x } _ { 1 } - \bar { x } _ { 2 }$ .

Question

Quizplus · Accepted Answer

The difference between two sample means $\bar{x}_1 - \bar{x}_2$ is an unbiased estimator of the difference between two population means $\mu_1 - \mu_2$.

The Best Estimator of the Difference Between Two Population Means μ1−μ2\mu _ { 1 } - \mu _ { 2 }μ1​−μ2​

The Best Estimator of the Difference Between Two Population Means $\mu _ { 1 } - \mu _ { 2 }$