A bag contains 3 red, 5 black balls. Two balls are drawn at random. The probability that they are of different colors is: MCQ with Answer and Explanation
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Question #1
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If events A and B are independent, which of the following must be true?
Correct Answer: Option B
Explanation:
Independence means knowledge of B does not affect A's probability, so P(A|B) = P(A); this is equivalent to P(A∩B)=P(A)P(B).
Independence means knowledge of B does not affect A's probability, so P(A|B) = P(A); this is equivalent to P(A∩B)=P(A)P(B).
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Bayes' theorem is based on the concept of:
Correct Answer: Option D
Explanation:
Bayes' theorem expresses the conditional probability P(A|B) in terms of P(B|A) and prior probabilities.
Bayes' theorem expresses the conditional probability P(A|B) in terms of P(B|A) and prior probabilities.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The current base year of WPI (wholesale price index) in India is:
Correct Answer: Option B
Explanation:
The revised WPI series uses 2011-12 as base.
The revised WPI series uses 2011-12 as base.
This question belongs to:
Accountancy and Statistics
Statistics
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