In order for trainees 2 and 4 to reach an 80% success rate with an unacceptable 40% failure percentage, they needed 22 and 16 cases, respectively. Overall, 100 cases were analysed.
Para que los estudiantes 2 y 4 alcanzaran una tasa de éxito del 80% con un porcentaje de fallo no aceptable del 40%, necesitaron realizar 22 y 16 casos, respectivamente.