Answer:
3/4
Step-by-step explanation:
probability of any event = [tex]\frac{number of favourable outcomes}{total number of outcomes}[/tex]
3 freshmen + 3 sophomores + 3 juniors + 3 seniors = 12 participants
∴the total number of participants = 12
P(freshman is a captain) = [tex]\frac{number of freshmen}{total number of participants}[/tex]
= [tex]\frac{3}{12}[/tex]
=[tex]\frac{1}{4}[/tex]
P (freshman is not a captain) = 1 - [tex]\frac{1}{4}[/tex]
= [tex]\frac{3}{4}[/tex]
whenever the probability of an event not happening is being calculated, always subtract the possibility of the occurrence of such event from 1
