Question

The conditional probability of B given A is
a. P(A∩B)/P(B)
b. P(A∩B)/P(A)
c. P(AUB)/P(B)
d. P(AUB)/P(A)

Answer 1

A is given

so probability B given A

will be

P(A ∩B )/P(A)

Answer 2

Hi ,

Conditional Probability :
__________________

If A and B are two events in sample

space and P( A ) ≠ 0 .

The probability of B after the event

A has occurred is called the

Conditional Probability of B given A

is denoted by

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

Therefore ,

Option ( b ) is correct.

I hope this helps you.

: )