arrow
arrow
arrow
If two events 'A' and 'B' are independent, then which of the following expressions on probabilities are correct? (A) P(A|B) = P(A) (B) P(A|B) = P(A) /
Question



If two events 'A' and 'B' are independent, then which of the following expressions on probabilities are correct? (A) P(A|B) = P(A) (B) P(A|B) = P(A) / P(B) (C) P(B|A) = P(B) (D) P(B|A) = P(B) / P(A)
Choose the correct answer from the options given below:

A.

(A) and (C) Only

B.

(B) and (D) Only

C.

(A) Only

D.

(A) and (D) Only

Correct option is A

Explanation:
Two events A and B are said to be independent if the occurrence of one does not affect the probability of the other. This leads to:
· P(A|B) = P(A)
· P(B|A) = P(B)
This is the defining property of independence. It means the conditional probability equals the original probability.
Information Booster:


Additional Information:
· (B) is incorrect: P(A|B) = P(A)/P(B) is not a general or correct expression for conditional probability under independence.
· (D) is incorrect: P(B|A) = P(B)/P(A) is not valid under independence. It misrepresents the formula.

test-prime-package

Access ‘UGC NET EVS’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
176k+ students have already unlocked exclusive benefits with Test Prime!

Free Tests

Free
Must Attempt

UGC NET Paper-I (21 August 2024 Shift 2)

languageIcon English
  • pdpQsnIcon50 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon60 Mins
languageIcon English
Free
Must Attempt

UGC NET Paper-I (21 August 2024 Shift 2)

languageIcon English
  • pdpQsnIcon50 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon60 Mins
languageIcon English
Free
Must Attempt

UGC NET Paper-I (21 August 2024 Shift 2)

languageIcon English
  • pdpQsnIcon50 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon60 Mins
languageIcon English