List default pass flags.
Each score is compared with the default cutoff 0.5: 0.42, 0.46 and 0.49 fall below it and 0.52 and 0.56 do not, so the pass flags are 0,0,0,1,1.
Does changing only the cutoff prove model change?
No. Outputs remain fixed; the measurement transformation changes.
What is the first transfer slope?
(0.3-0.1)/(20-10)=0.02 score per scale unit.