Question

P(AB)

=
P(A n B)
P(B)
Freshmen
Sophomores
Juniors
Seniors
Boys
3
1
4
2
Girls
7
9
6
5
P(Girl|Senior) =

Answer 1

P (Girl|Senior) = P(Girl n Senior) / P(Senior)

P(girl n senior) = 5 / 37

P(senior) = 7/37

P(girl | senior) = 5/7