2-sample problems - inference on parameters involving two populations
- Population 1: πΒ βΌΒ ππ(π₯)
- Population 2: πΒ βΌΒ ππ(π¦)
CI - Independent or Paired Samples
- CI with 2 Independent Samples - nor 1-to-1 related
- CI with Paired Samples -Β 1-to-1 related
2 Independent Samples
sample size ofΒ π andΒ π may be different
|
π |
π |
|---|---|
|
π1 |
π1 |
|
π2 |
π2 |
|
β¦ |
β¦ |
|
πn |
πm |
Paired Samples
sample size ofΒ π andΒ π are the SAME
|
Subject # |
(π,Β π) |
π· = π - π |
|---|---|---|
|
1 |
(π1,Β π1) |
π·1 = π1Β - π1 |
|
2 |
(π2,Β π2) |
π·2 = π2Β - π2 |
|
β¦ |
β¦ |
β¦ |
|
n |
(πn,Β πn) |
π·n = πnΒ - πn |