Open Access
Table 3
Results of t-test for the SNQ of rubber ball impact sound between groups.
| Group | N |
|
SD | df | t | p | |
|---|---|---|---|---|---|---|---|
| Construction company | A | 30 | 52.8567 | 1.83128 | 62 | 9.733 | 0.000 |
| B | 34 | 48.6706 | 1.60992 | ||||
| Finishing material | Not installed | 15 | 55.6067 | 2.00409 | 43 | 4.603 | 0.000 |
| Installed | 30 | 52.8567 | 1.83128 |
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