A primary school has 6 classes, numbered from 1 to 6. Class 1 has twice as many students as each of the other classes. What is the probability that a randomly selected student is from an odd-numbered class?
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1 markStatisticsProbability and Bayes' theoremProbability axioms, events and sample spacesModerateabout 3 min
DSE 2007 Question 18: Probability and Bayes' theorem
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A primary school has 6 classes, numbered from 1 to 6. Class 1 has twice as many students as each of the other classes. What is the probability that a randomly selected student is from an odd-numbered class? (A) 10/21 (B) 3/7 (C) 8/21 (D) 4/7
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Probability axioms, events and sample spaces, part of Probability and Bayes' theorem in Statistics.
The rules every probability must follow and the vocabulary of events.
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Question from the DSE 2007 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.