101k views
0 votes
Find the missing probability. P(A)=1120,P(B|A)=1320,P(A∩B)=?

User Sturoid
by
7.0k points

2 Answers

6 votes
THE ANSWER IS 143/400 !
User Daniel Li
by
6.7k points
6 votes

Answer: 143/400

Step-by-step explanation:

Assuming you meant to say

P(A) = 11/20

P(B|A) = 13/20

then,

P(A∩B) = P(A)*P(B|A)

P(A∩B) = (11/20)*(13/20)

P(A∩B) = (11*13)/(20*20)

P(A∩B) = 143/400

User Gunnlaugur Briem
by
6.6k points