To find the probability you use the next:
For probability of A given B
For the given situation:
Find the probability that the student was a Female, given they sat in the Front Center of the classroom
A = Female student
B = Sat in the front center
1. Find P( A∩B). number of female students sat in front center (10) divided into the total number of stuents (72)
2. Find the probability of B (P(B)). Number of students sat in the front center (25) divided into the total number of students(72):
3. Find the probability of A given B:
Then, the probability taht the studen was female, given they sat in the front center of the classroom is 0.4 (or 40%)