Question

P(a) = .20 p(b) = .25 p(a and b) = .10 what is p(b/a)

A. 0.40
B. 0.25
C. 0.50
D. 0.05

Answer 1

the correct answer is (C.) 0.50

Explanation:

20+25+10=50

Answer 2

P(B|A)=0.50

Explanation:

As we know that condational probability is given by

P(B|A)=P(A and B) /P(A)

Putting the values we get

P(B|A)=.10/.20

P(B|A)=0.50