Question

Describe what the notation Upper P (Upper B vertical line Upper A )represents.

A. The probability of event B and event A occurring.
B. The probability of event A​ occurring, given that event B has already occurred.
C. The probability of event B or event A occurring.
D. The probability of event B​ occurring, given that event A has already occurred.

Answer 1

Answer: Option 'D' is correct.

Explanation:

Since we have given that

Upper P (Upper B vertical line Upper A)

means

`P(B|A)`

It means that probability of getting event B given that Event A is occurred.

D. The probability of event B​ occurring, given that event A has already occurred. is also expressed as
`P(B|A)`

Hence, Option 'D' is correct.