delt
the psychomotor was from 7 to 4 and each session was 1hour. Each session had 8people that makes a total of 80 people who did the psychomotor. If only 20 people are taken that technically means 2 people per session giving me a probability of only 25% of course with a +-5% error.....and what about the group that flew out on January?? How many were they?