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Questions › JNU › JNU SSS 2013 › Q79
1 mark, −0.25Statistics › Probability and Bayes' theorem › Addition rule, complements and inclusion-exclusionModerateabout 1 min

JNU SSS 2013 Question 79: Probability and Bayes' theorem

For events AAA and BBB (i) the probability of event AAA is ppp (ii) the probability of event BBB is qqq (iii) the probability of event ABABAB is rrr Which of the following is true?

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For events A and B (i) the probability of event A is p (ii) the probability of event B is q (iii) the probability of event AB is r Which of the following is true? (A) Probability {either A or B or both} = p + q (B) Probability {either A or B but not both} = p + q - r (C) Probability {either A or B but not both} = p + q - 2r (D) None of the above

Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.

What this question tests

This question is on Addition rule, complements and inclusion-exclusion, part of Probability and Bayes' theorem in Statistics.

The probability of at least one of several events, and of none.

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Question from the JNU SSS 2013 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.