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Table 13 Power of various confidence intervals with different ρ and δ, μ 1, μ 2, (n,n 1,n 2)=(5,5,2), when \({\sigma _{1}^{2}}={\sigma _{2}^{2}}=4\)

From: Confidence intervals construction for difference of two means with incomplete correlated data

Bivariate normal distribution

ρ

δ

μ 1

μ 2

T 3

T 4

T 5

W s

W a

B 1

B 2

B 3

B 4

-0.9

-0.25

0

0.25

1.5

2.5

4.3

7.5

12.4

5.2

4.8

6.6

5.0

 

0.5

2

1.5

3.2

4.1

6.4

10.8

15.6

7.5

7.4

9.4

7.4

-0.5

-0.25

0

0.25

3.9

3.0

5.7

8.5

12.9

5.6

5.1

5.6

5.2

 

0.5

2

1.5

4.0

3.0

6.5

9.9

14.4

6.8

6.9

7.3

6.8

-0.1

-0.25

0

0.25

3.6

2.9

6.2

9.5

14.8

5.8

5.8

5.9

6.0

 

0.5

2

1.5

5.5

4.9

8.7

11.3

16.4

8.3

8.2

7.9

7.9

0

-0.25

0

0.25

4.4

3.3

6.9

9.8

14.7

5.7

5.7

5.9

5.9

 

0.5

2

1.5

4.7

4.0

7.6

10.8

16.7

7.9

7.9

7.6

7.6

0.1

-0.25

0

0.25

3.5

2.9

5.5

8.2

13.3

5.8

5.7

5.7

5.7

 

0.5

2

1.5

5.1

4.3

8.1

11.6

16.2

7.6

7.3

7.5

7.4

0.5

-0.25

0

0.25

4.7

3.3

5.9

9.6

14.7

6.7

6.5

8.5

6.3

 

0.5

2

1.5

5.3

5.1

8.4

13.1

17.9

11.1

10.8

13.2

10.6

0.9

-0.25

0

0.25

3.9

3.5

4.7

9.7

15.4

10.7

6.5

27.5

6.4

 

0.5

2

1.5

9.1

6.0

8.2

13.7

18.0

27.9

11.4

27.3

11.2

Bivariate t-distribution

-0.9

-0.25

0

0.25

1.2

2.1

4.0

6.7

11.6

4.9

5.1

5.9

4.7

 

0.5

2

1.5

1.5

2.0

4.0

6.1

11.4

4.9

5.0

6.1

4.3

-0.5

-0.25

0

0.25

2.0

1.5

4.2

6.2

12.2

4.8

5.1

5.1

4.9

 

0.5

2

1.5

2.0

1.8

5.0

6.8

12.7

6.3

6.3

6.4

5.9

-0.1

-0.25

0

0.25

2.9

2.8

6.0

8.3

15.2

7.1

7.0

6.7

6.4

 

0.5

2

1.5

2.0

1.9

5.0

7.0

12.7

4.4

4.4

4.1

4.0

0

-0.25

0

0.25

2.5

2.0

4.1

6.7

12.4

5.0

5.0

4.5

4.5

 

0.5

2

1.5

2.2

1.9

4.6

6.5

12.8

6.1

6.1

5.9

5.9

0.1

-0.25

0

0.25

2.4

2.1

4.4

7.0

12.0

5.2

5.1

5.0

5.0

 

0.5

2

1.5

2.9

2.7

5.6

7.4

13.2

5.3

5.1

4.9

5.0

0.5

-0.25

0

0.25

1.3

2.0

4.4

6.1

11.4

5.0

5.2

6.4

5.2

 

0.5

2

1.5

1.7

2.0

4.7

6.1

11.4

4.9

5.1

5.9

4.7

0.9

-0.25

0

0.25

1.3

2.8

3.4

5.0

10.4

5.0

4.8

5.4

4.4

 

0.5

2

1.5

2.1

2.2

2.7

5.1

11.7

5.7

5.8

5.8

5.2