Generally, the ________ sample procedure for inferences about two population means provides better precision than the _______ sample approach.
A) single, independent
B) independent, pooled
C) matched, independent
D) matched, pooled

Question

Generally, the ________ sample procedure for inferences about two population means provides better precision than the _______ sample approach.​
A) ​single, independent
B) ​independent, pooled​
C) ​matched, independent
D) ​matched, pooled

Quizplus · Accepted Answer

The matched sample procedure (also known as paired or dependent samples) generally provides better precision for inferences about two population means than the independent sample approach because it controls for variability between the pairs that is not related to the treatment or condition being tested. This control for extraneous variability increases the precision of the estimate of the difference between the population means.

Generally, the ________ Sample Procedure for Inferences About Two Population