A traffic light on the way to the University is red 40% of the time. What is the probability of getting a red light (i) 2 days in a row; (ii) any 2 out of 3 days?
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1 markStatisticsProbability and Bayes' theoremRepeated trials: binomial and geometric probabilitiesModerateabout 3 min
DSE 2007 Question 19: Probability and Bayes' theorem
Answer and worked solution
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Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Repeated trials: binomial and geometric probabilities, part of Probability and Bayes' theorem in Statistics.
Probabilities from independent repeated experiments.
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Question from the DSE 2007 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.