Table 1 Station overview and sample sizes
Car system | Number of hands-on repair tasks | Number of potential repair actions listed on the protocol | Number of video-based items | n |
|---|---|---|---|---|
Electric lighting | 4 | 23 | 17 | 47 |
Hydraulic brakes | 5 | 42 | 18 | 39 |
Timing belt | 4 | 42 | 17 | 40 |