Table 1 First attempt time (seconds) for each device

Arithmetic mean

13.49

15.55

Standard deviation

3.00

3.48

Minimum

9.86

9.87

Lower quartile

11.37

12.84

Median

12.92

15.84

Upper quartile

14.50

17.85

Maximum

22.25

23.16

Kolmogorov-Smirnov test

D = 0.1607, df = 34, p = 0.3096

D = 0.1060, df = 29, p = 0.8670

Fisher-Snedecor F-test

F = 0.7429, p = 0.4106

Student’s t-test

t = 2.5190, df = 61, p = 0.0144