Question

Find the missing probability.

P(B)=12,P(A∩B)=740,P(A|B)=?
A. 1/2
B. 7/20
C. 7/40
D. 2/5

Answer 1

Answer:

B. 7/20

Step-by-step explanation:

P(A | B) = P(A∩B) / P(B) is the formula for conditional probability

             = (7/40) / (1/2)

Copy dot flip

              = 7/40 * 2/1

              =7/20