PRC-2 · Chapter 11 · Question 42 of 60
When calculating a conditional probability denoted as P(A | B), what is the formula generally utilized?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) P(A and B) / P(B)
Explanation
The conditional probability of A given that B has already occurred is calculated by taking the probability of the intersection (where both occur) and dividing it by the probability of the given condition (B).
More Probability Concepts MCQs
- Q44Which of the following scenarios strictly requires the use of 'Combinations' rather than 'Permutations'?
- Q45What is the mathematical sum of the probabilities of all mutually exclusive and exhaustive events in a given sample space?
- Q46What is the mathematical range of a probability value (P) for any single, specific event?
- Q47If two events, A and B, are defined as 'mutually exclusive', what is the probability of both events occurring simultaneously P(A ∩ B)?
- Q48The 'Complementary Rule' in probability theory states that the probability of an event NOT occurring [P(A')] is equal to: