Hole diameter (inch)

Group

N

M

SD

T

Pro

1.156

Healthy

48

0.00

0.00

-

-

Deaf

32

0.00

0.00

1.125

Healthy

48

0.06

0.24

1.44

0.153

Deaf

32

0.00

0.00

0.5

Healthy

48

0.15

0.41

1.02

0.307

Deaf

32

0.06

0.25

0.312

Healthy

48

0.48

1.52

0.24

0.809

Deaf

32

0.41

0.95

0.187

Healthy

48

2.90

5.06

0.23

0.817

Deaf

32

2.63

5.16

0.109

Healthy

48

3.02

4.22

3.09

0.003*

Deaf

32

8.38

10.86

0.093

Healthy

48

8.35

7.40

1.47

0.144

Deaf

32

11.53

11.85

0.078

Healthy

48

17.85

10.32

0.44

0.659

Deaf

32

19.28

18.45

0.0625

Healthy

48

29.94

13.11

0.59

0.552

Deaf

32

27.78

19.18